AP Physics C – Electricity and Magnetism : Conductors, Capacitors, Dielectrics Practice Test
AP Physics C – Electricity and Magnetism : Conductors, Capacitors, Dielectrics Practice Test
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Question 1 of 19
1. Question
Two parallel conducting plates separated by a distance d are connected to a battery with voltage V. If the distance between them is doubled and the battery stays connected, which of the following statements are correct?
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Question 2 of 19
2. Question
Capacitances are as follows:
A = 3F
B = 7F
C = 4F
D = 1F
What is the total capacitance of the system in the diagram above?CorrectIncorrect 
Question 3 of 19
3. Question
Capacitances are as follows:
A=1F
B=3F
C=4F
D=2F
Consider the diagram above. If the battery has a potential difference of 5V, what is the total energy of the system once it’s fully charged?CorrectIncorrect 
Question 4 of 19
4. Question
A dielectric is put between the plates of an isolated charged parallel plate capacitor. Which of the following statements is true?
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Question 5 of 19
5. Question
Suppose I have a uniform electric field within a parallel plate capacitor. Suppose the capacitor’s plates are .5m in length and .001m in width, and the space between the plates is 1.5cm. Given that the capacitance is 2.95 ∗ 10 13 F, at what voltage difference is required for the capacitor to store 10 6 C of charge?
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Question 6 of 19
6. Question
Three capacitors are in parallel with each other. What can be said for certain aabout the total capacitance?
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Question 7 of 19
7. Question
Imagine a capacitor with a magnitude of charge Q on either plate. This capacitor has area A, separation distance D, and is not connected to a battery of voltage V. If some external agent pulls the capacitor apart such that D doubles, did the charge on each plate increase, decrease or stay the same?
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Question 8 of 19
8. Question
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Question 9 of 19
9. Question
What is the total equivalent capacitance? Given: C1=5F, C2=7F, C3=1F
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Question 10 of 19
10. Question
If the maximum amount of charge held by a capacitor at a voltage of 12V is 36C, what is the capacitance of this capacitor?
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Question 11 of 19
11. Question
Imagine a capacitor with a magnitude of charge Q on either plate. This capacitor has area A, separation distance D, and is connected to a battery of voltage V. If some external agent pulls the capacitor apart such that D doubles, did the charge von each plate increase, decrease or stay the same?
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Question 12 of 19
12. Question
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Question 13 of 19
13. Question
Consider the given diagram. If V 1 = 4V, each plate of the capacitor has surface 2 area 100cm , and the plates are 0.1mm apart, determine the number of excess electrons on the negative plate. e=1.6∗10 19 C
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Question 14 of 19
14. Question
A 3.0μF parallelplate capacitor is connected to a constant voltage source. If the distance between the plates of this capacitor is 4mm and the capacitor holds a charge of 12.0μC, what is the value of the electric field between the plates of this capacitor?
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Question 15 of 19
15. Question
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Question 16 of 19
16. Question
What is the total resistance of the circuit above? R1=5Ω, R2=7Ω
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Question 17 of 19
17. Question
You have 3 resistors in parallel with each other. What can you say for certain about the total resistance of the circuit?
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Question 18 of 19
18. Question
You have two resistors in series, with the pair being in parallel with another resistor. What can be said for certain about the total resistance?
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Question 19 of 19
19. Question
A circuit has two identical resistors in series. The resistors are then changed so they are in parallel. How will the current of the circuit change?
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