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AP Physics 2 Units 10 to 12 electricity and magnetism problem-solving quiz quiz

12questions. Pick an answer and you'll see why right away.

  1. Two point charges are moved so the distance between them doubles. By Coulomb's law, the electric force between them becomes...

  2. Two identical metal spheres carry charges of +8q+8q and −2q-2q. They are touched together and separated. What charge does each then carry?

  3. What is the direction of the electric force on a negative charge placed in an electric field that points east?

  4. A charge of +2.0×10−6+2.0 \times 10^{-6} C is accelerated from rest through a potential difference of 300300 V. How much kinetic energy does it gain?

  5. A parallel-plate capacitor has its plate separation doubled while it stays connected to the same battery. What happens to the charge it stores?

  6. Two resistors of 4.04.0 ohms and 4.04.0 ohms are connected in parallel. What is their equivalent resistance?

  7. A 9.09.0 V source drives a 3.03.0-ohm resistor. What power is dissipated in the resistor?

  8. Kirchhoff's loop rule (the voltage changes around a closed loop sum to zero) is a statement of which conservation law?

  9. A charged particle moves parallel to a uniform magnetic field. What is the magnetic force on it?

  10. Why does the magnetic force on a moving charge do no work?

  11. Two long parallel wires carry currents in the same direction. What is the magnetic force between them?

  12. A bar magnet is held stationary inside a coil of wire. What is the emf induced in the coil?