Capacitors and Capacitance

Practice Questions

AP Physics 2 › Capacitors and Capacitance

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1

You have 3 capacitors in series. Their capcitance's are , , and . What is the total capacitance of the system?

2

Lazy capacitor

Consider the given diagram. If , each plate of the capacitor has surface area , and the plates at apart, determine the excess charge on the positive plate.

3

Lazy capacitor

Consider the given diagram. If , each plate of the capacitor has surface area , and the plates are 0.1mm apart, determine the number of excess electrons on the negative plate.

4

You have 4 capacitors, , , , and , arranged as shown in the diagram below.

4capacitorcircuit

Their capacitances are as follows:

What is the total capacitance of the circuit?

5

If the maximum amount of charge held by a capacitor at a voltage of 12V is 36C, what is the capacitance of this capacitor?

6

Suppose I have a uniform electric field within a parallel plate capacitor with field strength of .

Suppose the capacitor's plates are in length and in width, and the space between the plates is .

Determine the capacitance of this system given that the space in between is a vacuum, and that the permittivity of empty space is .

7

Consider the circuit:

Circuit_3__capacitors_

What is the total equivalent capacitance?

8

Three capacitors are in parallel with each other. What can be said for certain about the total capacitance?

9

Suppose I have a uniform electric field within a parallel plate capacitor with field strength of .

Suppose the capacitor's plates are in length and in width, and the space between the plates is .

What is the voltage difference across the capacitor?

10

Physics2set1q10

In this parallel-plate capacitor, the distance between the plates is , the area of each plate is , and the voltage across them is .

Calculate the capacitance.

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