AP Physics C: Electricity and Magnetism Practice Test

1. Question

Three small spheres of mass m and positive charge Q are held in the positions shown in the figure above. The object on the right is then allowed to move and is released from rest. Which of the following claims best describes the subsequent motion of the sphere on the right?

The sphere moves to the right with an acceleration that decreases with time.
The sphere moves to the right with a constant acceleration.
The sphere moves to the right with an acceleration that increases with time.
The sphere moves to the left with a constant acceleration.
The sphere moves to the left with an acceleration that decreases with time.

2. Question

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3. Question

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4. Question

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5. Question

Two identical conducting spheres are mounted on insulating handles, as shown. Sphere I has a positive charge, and sphere II has no excess charge, as shown in Figure 1. Sphere I is brought close to sphere II, which is grounded with a wire, as shown in Figure 2. The grounding wire is disconnected and then sphere I is removed, isolating sphere II as shown in Figure 3. Which of the following correctly predicts the charge on sphere II after this procedure is followed?

Sphere II will have a positive charge.
Sphere II will have a negative charge.
Sphere II will have no net charge.
Sphere II will be polarized, and its left side will have a positive charge.
Sphere II will be polarized, and its left side will have a negative charge.

6. Question

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7. Question

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8. Question

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9. Question

zero
4.0 V
6.0 V
8.0 V
12 V

10. Question

Resistors 1 and 2 are connected in series to the same battery. The resistors are made of the same material, but resistor 1 has twice the length and half the diameter of resistor 2. If the rate at which energy is dissipated in resistor 2 is P, what is the rate at which energy is dissipated in resistor 1?

1/8 P
1/4 P
P
4P
8P

11. Question

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12. Question

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14. Question

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15. Question

Students are performing an experiment with a bar magnet and a conducting loop of wire. The loop is initially around the magnet and is then pulled away from the magnet. At the moment shown in the figure, the loop is being pulled to the right and the students can feel a magnetic force as they pull the loop. Which of the following claims is correct and supported by appropriate experimental evidence?

There is a clockwise (CW) current induced in the loop, as indicated by a magnetic force to the left.
There is a counterclockwise (CCW) current induced in the loop, as indicated by a magnetic force to the left.
There is a clockwise (CW) current induced in the loop, as indicated by a magnetic force to the right.
There is a counterclockwise (CCW) current induced in the loop, as indicated by a magnetic force to the right.
There is a counterclockwise (CCW) current induced in the loop, as indicated by a magnetic force toward the top of the page.

AP Physics C: Electricity and Magnetism Practice Test

AP Physics C: Electricity and Magnetism Practice Test

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1. Question

Three small spheres of mass m and positive charge Q are held in the positions shown in the figure above. The object on the right is then allowed to move and is released from rest. Which of the following claims best describes the subsequent motion of the sphere on the right?

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

11. Question

12. Question

13. Question

14. Question

15. Question

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