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How To Learn Anything Faster

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Learning how to learn is an essential skill that is often overlooked. It is crucial to improve our lives in various aspects. In this article, I will share nine evidence-based tips that have proven to be helpful for learning any subject:


1. Prepare yourself


Abraham Lincoln once said, “Give me six hours to chop down a tree and I will spend the first four sharpening the axe.” This quote emphasizes the importance of preparation. Before diving into learning, it is necessary to be well-prepared.


2. Focus optimization





Using crutches or aids can help enhance focus. These tools can assist in optimizing your learning experience.

The first is the five minute rule. The idea is that if we want to do something and we’re finding it difficult to start, the five minute rule tells us to just work on the thing for 5 minutes. Then, after five minutes, we’re allowed to stop. We don’t have to continue if we don’t want to. But, more often than not, I find that if I’ve already started doing something, I do actually want to continue. The problem was just getting started.




The second ‘crutch’ I found useful is to chuck my phone away. I know it sounds simple but we’re so glued to our phones these days that by tossing our phone on the floor or leaving it in the kitchen, we can remove a key point of distraction and force ourselves to focus, free from distraction. And if there’s anything else we find particularly distracting – like tablets, TVs, or other interesting gadgets – it’s really helpful if we can place them as far as possible from our workspace.



3. Immerse in the subject


To truly grasp a topic, immerse yourself in it. Find opportunities to fully engage with the subject matter.

So the general principle here is that we learn best when we’re in the environment where we’re actually going to be using the skill.

My advice: step out of your comfort zone and fully immerse yourself in the thing you want to learn. It can be scary, but it’s 100% worth it.


4. Identify weak areas




Recognize your weaknesses and focus on improving them. Understanding your weak links can help you create a more effective learning strategy.

Constantly ask yourself the following question:

If the exam were tomorrow, what topic would I be the least happy about?

it’s very tempting to just do the stuff that seems familiar to us. If we’re studying for an exam, it’s very tempting to open the book to page one even though we already know that stuff.

But, learning only really happens when we’re trying to fix our weaknesses and there’s a decent level of difficulty. If something’s too easy, we’re not going to learn anything.

So, if we want to maximise our learning and learn faster, we really want to focus on those areas of weakness. In essence, we need to find the weak links and use drills to improve them as quickly as possible.



5. Test yourself


Regularly assess your knowledge and understanding. Testing yourself reinforces learning and helps identify areas that need more attention.



In the world of studying, there’s this thing called ‘active recall’, which applies to learning anything.

The idea behind active recall (or retrieval practice) is that we don’t learn by trying to put stuff into our brains. We actually learn, counterintuitively, by trying to take stuff out of our brains.

And if you’ve had that experience where you’ve read something in a textbook or on a website and you’ve completely forgotten everything a few days later, that’s just because you haven’t repeatedly tested yourself on that knowledge (try to recall all 9 of these tips in a few days time to practice!).

Without self-testing we’ll just forget everything we’re trying to learn.


6. Seek feedback


Obtain regular and intense feedback on your progress. Feedback provides valuable insights and helps you refine your learning approach.

It’s these tight feedback loops that encourage learning, whether it’s for exams or for anything else in life.


7. Overlearn


Don’t stop at acquiring basic knowledge. Strive to go beyond and master the subject through overlearning.
When we’re learning something we actually want to try and learn it in more depth than we necessarily need to. And the idea here is to continuously be asking why a thing works the way that it does.

In the end, we have a deeper appreciation as to why things are the way they are. And it makes learning anything else in that particular sphere so much easier and more efficient.


8. Use spaced repetition


Space out your study sessions to optimize retention. Spacing allows for better long-term memory formation.

The forgetting curve tells us that when we learn something – whether it’s a fact, a skill, or whatever – we’re going to forget it after a certain period of time. In other words, our memory decays over time.

So, in order to retain that information, we have to keep testing ourselves on the thing for our brain to absorb the information fully. It’s like with our muscles: if we don’t use our muscles, they’ll atrophy and get smaller (☹️). Equally, with our brains, if we learn a language when we’re five years old and then don’t use it for the next 10 years, we’re going to forget most of it.





9. Teach others


Share your knowledge with others. Teaching what you have learned reinforces your understanding and helps you retain information.

We often tell ourselves that we can’t teach someone something because we’re not an expert at it. But, for me, that’s not true. In fact, C.S Lewis talks about this thing called ‘the curse of knowledge’, which is that when we’re trying to learn something, we often don’t learn best from experts. Instead, we learn best from people who are just one step in front of us along the same journey.

It’s better to learn from a guide than a guru.

This is all to say, don’t be afraid to teach what you’re learning.



By following these evidence-based tips, you can enhance your learning abilities and achieve greater success in various aspects of life.

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ACADEMICS

PHY 203 Quiz For OAU

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Created by Oluwaferanmi Akinyele

PHY 203 Quiz

These are likely questions for our test based on our class notes, few questions our lecturers asked in class, examples in the notes and some online questions.

 

This quiz consists of 95 questions covering all the topics we have been taught in PHY 203 till present. I hope we all find it helpful.

You have 50 mins for this quiz.

 

 

 

Contributors: Zainab, Verah & Lammylex (CHM department)

and Shukroh, Great Blakky and Ebun (PHY department)

 

Goodluck!❤️

1 / 95

1. The transistor is a current __________ device.

2 / 95

2. Coils are …………… separated, but ……………. linked together

3 / 95

3. Which of the following statements is/are true? I. A multimeter can be used as an ammeter when low resistance is connected in parallel with the galvanometer II. A low sensitive meter will measure Voltage perfectly III. A multimeter cannot be used to determine circuit continuity IV. A multimeter can be used as an voltmeter when high resistance is connected in series with the galvanometer

4 / 95

4. A component that allows the flow of current in only one direction is called ……….

5 / 95

5. Voltmeter draws …………………… current

6 / 95

6. Calculate Ia, Ib and Ic

7 / 95

7. An Inductor tend to smooth sudden change in ……………..

8 / 95

8. The most versatile circuit configuration for transistors is the

9 / 95

9. Which of the following is true about transformers?

I. Open circuit test are done with a load on the transformer.

II. Copper loss is due to the ohmic resistance of the transformer windings.

III. Open circuit test is done to determine the ‘no load loss’ of the transformer.

IV. A transformer is electrically linked.

10 / 95

10. Any transistor designed must operate in the ________ region of the characteristic curve

11 / 95

11. The separation between conduction band and valence band on the energy level diagram is called ________

12 / 95

12. The resistivity of a semiconductor is ………. that of an insulator, and …………that of conductors

13 / 95

13. Which of the following is correct

I. Small changes in V(BE) will produce large current changes in I(C) & I(E)

II. Small changes in V(CE) have little effect on I(B)

III. Small changes in V(CE) will produce large current changes in I(C) & I(E)

I, II, III & IVIV. Small changes in V(BE) will produce large current changes in I(B)

14 / 95

14. If a circuit has the following parameters Vcc =20V, Rs +Rm = 9.3KΩ, Vbe = 0.7, Im =1mA, and Β = 100. Calculate the meter current when E =10V and the voltmeter input r with or without the transistor.

15 / 95

15. The voltage signal at the collector is out of phase with the signal at the base by:

16 / 95

16. In checking for continuity of circuit which on these is used

17 / 95

17. A emitter-follower circuit has Vcc =12V, Rm = 1KΩ and a 2mA meter. If the amplification factor of the resistor is 80 and Vbe = 0.7. Calculate the suitable r for Rs to give fsd when E= 5V.

18 / 95

18. A mesh is any closed path in a circuit which does not enclose any other closed path inside it

19 / 95

19. The core in a transformer provides ?

20 / 95

20. A capacitor and an Inductor in an AC circuit is referred to as

21 / 95

21. Calculate the current flowing in the circuit

22 / 95

22. In an RL circuit voltage across the resistor increases exponentially

23 / 95

23. What type of bonds exist in semiconductors

24 / 95

24. The majority carriers in an n-type semiconductor is ?

25 / 95

25. Which of this must be connected to multimeter to be able to measure AC voltages?

26 / 95

26. In a multimeter, when the variable resistance and the fixed resistance are connected in series with the battery and galvanometer, the multimeter functions as

27 / 95

27. The process of setting up a current to operate a transistor at a desired point on its characteristic curve is known as __________

28 / 95

28. Which of the following is true about the effect of temperature on semiconductors

I. At absolute zero, there are no free electrons.

II. Above absolute zero, bonds break and electrons move under the influence of the applied electric field.

III. The semiconductor has its highest conductivity at absolute zero

IV. The semiconductor behaves as a perfect insulator at absolute zero

29 / 95

29. A transformer only increases the voltage with corresponding increase in current

30 / 95

30. A meter is protected in the case of accidental workload by connecting …………… in ………….. with a voltmeter

31 / 95

31. The loss due to the reversal of magnetization in the transformer core is known as

32 / 95

32. An ammeter also detects the direction of the flow of current

33 / 95

33. In a RC circuit, voltage across the resistor ………………. exponentially with time

34 / 95

34. Select the correct options only

I. Pentavalent impurities provide large number of free electrons to the semiconductor.

II. Trivalent impurities provide large number of free electrons to the semiconductor.

III. Trivalent impurities provide large number of holes to the semiconductor.

IV. Pentavalent impurities provide large number of holes to the semiconductor.

35 / 95

35. On the basis of their use, transformers are classified as

36 / 95

36. The potential barrier of a P-N junction depends on which of the following except

37 / 95

37. Calculate Rth, Vth, and I5

38 / 95

38. Depletion layer serves as barrier to the movement of free electrons.

39 / 95

39. The transistor is a three-terminal device that we can use to form a _____________ circuit

40 / 95

40. The collector current is determined by the _________

41 / 95

41. p-type and n-type semiconductor join together to form a …………….. known as …………….

42 / 95

42. A Thevenin’s equivalent circuit contains an equivalent source Vth in parallel with an equivalent resistor Rth

43 / 95

43. Why is a laminated steel core used in a transformer instead of a solid core?

44 / 95

44. A node is a collection point for two or more banches

45 / 95

45. What is known as eddy current loss in a transformer?

46 / 95

46. A resistor is regarded as a circuit element which puts energy into a circuit

47 / 95

47. When a small amount of trivalent impurity is added to a pure semi conductor, the semi conductor becomes

48 / 95

48. Inductors are very common in high-frequency circuit

49 / 95

49. A multiplier measures ………………, ………………….. and …………………

50 / 95

50. Which of this is true

51 / 95

51. A galvanometer measures and detects extremely small currents both in ………………… and ………………………

52 / 95

52. A variable resistor in an electric circuit is for ……………

53 / 95

53. Which of the following transformers has a high rating?

54 / 95

54. A capacitor C and an Inductor L store…………….. and ……………….. respectively

55 / 95

55. Inductors smoothen sharp sudden changes in ……….

56 / 95

56. A p-n junction is also known as

57 / 95

57. ________ converts alternating currents into direct currents

58 / 95

58. Circuit elements are connected in parallel when a common ……………. is applied to each elements

59 / 95

59. Which of the following is/are true

I. Reverse biasing prevents the flow of charge carriers across the junction.

II. Forward biasing is created when the positive terminal is connected to the n-type part of the PN junction.

III. In practice, when we apply reverse biasing to a PN junction, all the charge carriers stops to flow.

60 / 95

60. The loss due to ohmic resistance of the transformer windings

61 / 95

61. A perfect amplifier has all of the following properties except:

62 / 95

62. A transformer consists of two inductive coils namely;

63 / 95

63. Extrinsic semiconductors have more current conducting capacity than intrinsic semiconductors

64 / 95

64. A material that releases an electron from the valence band into the conduction band when a photon of light is incident on it is a ___________

65 / 95

65. In a transformer, most flux which get linked to the secondary winding is called?

66 / 95

66. No electrons can stay in the forbidden gap because

67 / 95

67. Calculate the equivalent resistance

68 / 95

68. In electronics, _____ refers to the use of DC voltage to establish certain operating conditions for an electronic device.

69 / 95

69. A laminated steel core that has high silicon content provides

70 / 95

70. Which of the following is/are correct?

I. Bipolar junction transistors control the current by varying the number of charge carriers

II. Voltage between 2 terminals are indicated by repeated letters

III. The emitter is lightly doped to reduce junction capacitance

IV. The emitter-base junction is forward biased

71 / 95

71. Circuit elements connected in series have common …………….. passing through each element

72 / 95

72. Loading effect of a meter happens because……………

73 / 95

73. The e–h+ pair can also be called ____

74 / 95

74. Which of these will result in forward biasing

I. when certain dc voltage is applied to the junction in such a direction that it cancels the potential barrier thus permitting the flow of current

II. Connecting the negative terminal of the battery to the p-type and positive terminal to the n-type

III. Connecting the positive terminal of the battery to the p-type and negative terminal to the n-type

IV. when certain dc voltage is applied to the junction in such a direction that the potential barrier is increased

75 / 95

75. In pure inductors, current ……… the voltage by ……

76 / 95

76. What are the examples of passive elements?

77 / 95

77. A semiconductor in an extremely pure form is known as ………….

78 / 95

78.

How many branches, nodes, loop and mesh do we have here?

79 / 95

79. A capacitor stores charge and hence, electric energy

80 / 95

80. A hole can also be described as a _________

81 / 95

81. The arrangement of atoms in a repetitive manner is known as

82 / 95

82. The Norton’s equivalent circuit contains a Norton equivalent source “I(N)” in parallel with an equivalent resistor R(N)

83 / 95

83. The emf that gets induced in the secondary winding according to Faraday’s law of electromagnetic induction is called?

84 / 95

84. What is the number of branches, nodes, loops, and meshes?

85 / 95

85. when the sensitivity of a meter is high, it means the meter has ………….

86 / 95

86. AC Current and Voltage may vary with time. True or False?

87 / 95

87. The principle behind the working of a transformer is _________

88 / 95

88. In a semiconductor, as temperature increases, conductivity ………………

89 / 95

89. A inductor stores energy in its _________

90 / 95

90. Consider the following statements and choose only correct answers

I. The resistivity of a semiconductor is less than that of an insulator and more than a conductor

II. As temperature increases, the conductivity of semiconductors decreases

III. We can consider a semiconductor as a resistance material

IV. Semiconductors have a negative temperature coefficient of resistance

91 / 95

91. To convert a multiplier to an ammeter, a ………. resistance is connected in ……………… with a galvanometer

92 / 95

92. A 6600/550V, 25KVA transformer has iron losses of 350W and its 1º and 2° winding resistances are 14.5 and 0.1Ω respectively. Determine the full load efficiency at a power factor of unity.

93 / 95

93. Copper loss is usually larger than other losses

94 / 95

94. Which of the statements about PN junction is true

I. A PN junction presents a high resistance if forward biased.

II. A PN junction presents a high resistance if reversed biased.

III A PN junction presents a low resistance if forward biased.

IV. A PN junction presents a low resistance if reversed biased.

 

95 / 95

95. …………………. are responsible for the conduction  in a conductor

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ACADEMICS

Quiz for CSC 201

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You have 30 mins for this quiz

Time up!


Created by Oluwaferanmi Akinyele

CSC 201

Preparatory Quiz for CSC 201 Test 2022/2023. This quiz contains 40 multiple choice questions.

 

 

The questions are compiled by Physics department gurus;

Ebun (Class rep)

Levi

Oluwaferanmi

Great

and Blakky

1 / 40

Which keyword is used to call a function in Python language?

2 / 40

Which of the following is an invalid variable?

3 / 40

The following are program elements except

4 / 40

What is the order of precedence in python?

5 / 40

Which type of Programming does Python support?

6 / 40

A computer software comprises of ___________ software & ___________ software

7 / 40

Which of the following functions is a built-in function in python?

8 / 40

Who developed Python Programming Language?

9 / 40

The following are python reserved words excerpt

10 / 40

Operating Systems includes the following except

11 / 40

Python was created in what year

12 / 40

What are the values of the following Python expressions?

“` 2**(3**2)“`

“` (2**3)**2“`

“` 2**3**2“`

13 / 40

Which of the following is true for variable names in Python?

14 / 40

Which one of the following is the use of function in python?

15 / 40

Application software includes the following except

16 / 40

What is the average value of the following Python code snippet?

“`grade1 = 80“`

“`grade2 = 90“`

“`average = (grade1 + grade2) / 2“`

17 / 40

Which of the following variable naming is correct

18 / 40

Which of the following is the correct extension of the Python file?

19 / 40

Which among the following list of operators has the highest precedence?

“` +, -, **, %, /, <<, >>, |“`

20 / 40

In flow charts, a terminal is represented with what shape

21 / 40

Machines developed in mechanical era include the following except

22 / 40

Machines developed in transistor era include the following except

23 / 40

Which of the following is an invalid statement?

24 / 40

The ______ is the brain of the computer that performs simple arithmetic & logical operations

25 / 40

Is Python code compiled or interpreted?

26 / 40

What will be the value of X in the following Python expression?

“`X = 2+9*((3*12)-8)/10“`

27 / 40

The outcome of a programming activity is a _________

28 / 40

‘Bit’ stands for

29 / 40

A ________ is a sequence of instructions telling the computer what to do.

30 / 40

What are the two main types of functions in Python?

31 / 40

The correct sequence of the history of modern era is

32 / 40

What is the maximum possible length of an identifier in Python?

33 / 40

Is Python case sensitive when dealing with identifiers?

34 / 40

The following are high-level languages except

35 / 40

What will be the output of the following Python expression?

“`round(4.576)“`

36 / 40

The expression

“`2**2**3“` is equal to “`(2**2)**3“`

37 / 40

Which of the following character is used to give single-line comments in Python?

38 / 40

What is the value of the following expression?

“`float(22//3+3/3)“`

39 / 40

The following is true about python except

40 / 40

Which of the following is used to define a block of code in Python language?

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ACADEMICS

PHY 205 Quiz

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OAU PHY 205 Quiz

PHY 205

1 / 34

1. Which field properties does an electron exhibit due to its charge and motion?

2 / 34

2. What term is used to describe the lowest energy state that an electron can occupy within an atom?

3 / 34

3. What type of process is represented by this equation e† + e¯ → ϒ + ϒ

4 / 34

4. What is the intrinsic angular momentum (spin) value of an electron?

5 / 34

5. What is the relative mass of an electron compared to a proton?

6 / 34

6. Electrons, being fermions, adhere to which principle that prohibits two electrons from occupying the same quantum state?

7 / 34

7. Which of the following is not quantized?

 

8 / 34

8. What is the electric charge of a positron?

9 / 34

9. Which branch of physics is concerned with the quantization of energy and its effects on the interaction of matter and energy?

10 / 34

10. Which of the following statements is TRUE?

11 / 34

11. Which of the following statements about electrons within an atom is true?

12 / 34

12. Wavelength is inversely proportional to an object’s mass

13 / 34

13. Electrons absorbs energy in form of photons as they are accelerated

14 / 34

1. In what devices are cathode ray tubes commonly used?

15 / 34

2. What happens when a metal wire is heated in a vacuum during thermionic emission?

16 / 34

3. High beam of cathode ray in vacuum tube can be steered and manipulated by

17 / 34

4. What is thermionic emission?

18 / 34

5. What type of radiation can be produced using cathode ray tubes?

19 / 34

6. Why is it necessary for the tube to be in a vacuum during thermionic emission?

20 / 34

7. In Thompson’s experiment, a a beam of electron travelling at 6.8 x 10^7m/s is bent into a circular path of radius 4cm in the magnetic of induction 10^-2 W/m2. Find the specific charge to mass (e/m)

21 / 34

1. In quantum mechanics, what role does a photon play in the electromagnetic field?

22 / 34

2. According to quantum mechanics, what is the alternate view of electromagnetic radiation (EMR)?

23 / 34

3. In electromagnetic waves, how do the electrical and magnetic components oscillate?

24 / 34

4. What is the significance of alpha particle scattering experiments in Rutherford's model?

25 / 34

5. How do the oscillations of the electrical and magnetic components in electromagnetic waves relate to the direction of propagation?

26 / 34

6. What is the primary reason for the scattering of alpha particles in Rutherford's model?

27 / 34

7. Arrange the following types of electromagnetic radiation in order of increasing frequency:

28 / 34

8. What are electromagnetic waves?

29 / 34

9. If the dimensions of the nucleus are small enough, what can happen to alpha particles passing very near the nucleus in Rutherford's model?

30 / 34

10. Arrange the following types of electromagnetic radiation in order of increasing wavelength

31 / 34

11. In Thomson's model, where are the negatively charged electrons located?

32 / 34

12. In Rutherford's model, where is the positive charge concentrated?

33 / 34

13. How are the electrons distributed in Thomson's model?

34 / 34

14. What is a photon?

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ACADEMICS

OAU PHY 203 Class Notes

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This PDF is the class notes for OAU  PHY 203 during the 2022/2023 session.




It encompasses topics ranging from circuit theory and network theorems to Thevenin’s and Norton’s theorems, progressing further into AC circuits, transformers, physics of active devices, semiconductors, and more.



I will continually update this file as we proceed through the classes. Thank you.

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