Chapter 9 Test

1. Two point charges, +2 μC and -3 μC, are 0.3 m apart. Find the magnitude and direction of the electrostatic force.
2. A 12 μF capacitor is connected to a 9 V battery. Determine the charge stored and the energy stored.
3. A series circuit consists of a 4 Ω and 6 Ω resistor connected to a 12 V battery. Find the current through each resistor and the voltage drop across each resistor.
4. Two resistors, 10 Ω and 5 Ω, are connected in parallel across a 15 V battery. Determine the total current supplied by the battery.
5. A wire 0.4 m long carries 3 A current perpendicular to a 0.25 T magnetic field. Calculate the magnetic force on the wire.
6. A proton with charge 1.6 × 10^-19 C moves at 2 × 10^6 m/s perpendicular to a 0.3 T magnetic field. Determine the magnetic force acting on it.
7. Calculate the electric potential at a point 0.5 m from a 4 μC point charge in vacuum.
8. A circuit has three resistors, 6 Ω, 3 Ω, and 2 Ω in series with a 24 V battery. Find the current in the circuit and voltage drop across each resistor.
9. A 20 μF capacitor is charged to 15 V. Determine the energy stored in the capacitor.
10. A wire of length 0.5 m carries 5 A current perpendicular to a 0.4 T magnetic field. Find the magnitude and direction of the force.