← Dashboard/AP Physics C: E&M

AP Physics C: E&M — Practice Test

⏱ 45:00

Simulation using available sample questions. Section format: 35 MCQ / 45 min · 3 FRQ / 45 min.

1. If the separation between two point charges triples, the Coulomb force becomes:
2. The electric field a distance r from a point charge q (q > 0) points:
3. Gauss's law relates electric flux to:
4. The electric field of an infinite charged plane is:
5. Electric field inside a uniformly charged conducting sphere (in equilibrium) is:
6. The force on a +2 μC charge in a field of 500 N/C is:
7. Electric field lines never:
8. The field of a point charge varies as:
9. By Gauss's law, the field outside a spherical charge distribution behaves as if charge is:
10. The SI unit of electric field is:
11. At the midpoint between two equal positive charges, the field is:
12. A dipole placed in a uniform field experiences:
13. Doubling both charges (fixed r) changes the Coulomb force by:
14. Electric flux through a closed surface enclosing zero net charge is:
15. The field of an infinite line of charge varies as:
16. A capacitor stores 12 μC at 6 V. Its capacitance is:
17. Energy stored in a capacitor C at voltage V is:
18. Inside a conductor in electrostatic equilibrium, the field is:
19. Inserting a dielectric into a capacitor (fixed charge) ___ the capacitance.
20. Excess charge on a conductor resides:
21. Two capacitors in parallel give total capacitance:
22. Two capacitors in series give a total capacitance that is:
23. A parallel-plate capacitor's capacitance increases if the plate separation:
24. The potential is constant throughout a conductor because:
25. A 4 μF and 4 μF capacitor in series give:
26. Doubling the voltage on a fixed capacitor changes stored energy by:
27. The electric field just outside a charged conductor is:
28. Capacitance depends on:
29. A capacitor with capacitance 2 μF charged to 10 V stores energy:
30. A dielectric constant κ > 1 means the material:
31. An RC circuit has R = 2 kΩ, C = 5 μF. The time constant is:
32. Just after an uncharged capacitor begins charging, the current is:
33. A long time after charging, the current in an RC circuit approaches:
34. A 12 V battery with a 4 Ω resistor carries current:
35. Kirchhoff's junction rule expresses conservation of: