| A | B |
|---|
| When a capacitor discharges | Charges move through the circuit from one plate to the other until both plates are uncharged. |
| A 0.25 μF capacitor is connected to a 9.0 V battery. What is the charge on the capacitor? | 2.2 x 10-6 C |
| A 0.50 μF capacitor is connected to a 12 V battery. Use the expression PE =1/2 C (∆)2 to determine how much energy is stored in the capacitor. | 3.6 x 10-5 J |
| A 1.5 μF capacitor is connected to a 9.0 V battery. Use the expression PE=1/2 C (∆)2 to determine how much energy is stored in the capacitor. | 6.1 x 10-5 J |
| When electrons move through a metal conductor, | They move in zigzag patterns because of repeated collisions with the vibrating metal atoms. |
| What is the potential difference across a 5.0 Ω resistor that carries a current of 5.0 A? | 25 V |
| A flashlight bulb with a potential difference of 4.5 V across it has a resistance of 8.0Ω. How much current is in the bulb filament? | 0.56 A |
| A lightbulb a resistance of 240Ω when operating at 120 V. What is the current in the lightbulb? | 0.50 A |
| If a 325 W heater has a current of 6.0 A, what is the resistance of the heating element? | 9.0 Ω |
| If a lamp has a resistance of 136Ω when it operates at a power of 1.00 x 10 2 W, what is the potential difference across the lamp? | 117 V |
| If the measured resistance of a lamp is 45Ω when it operates at a power of 80.0 W, what is the current in the lamp? | 1.3 A |
