Activity 2 — Capacitors and Capacitance
Capacitor C1 is connected across a battery of 5 V. An identical capacitor C2 is connected across a battery of 10 V. Which one has more charge?
A capacitor stores charge Q at a potential difference ΔV. What happens if the voltage applied to the capacitor by a battery is doubled to 2ΔV?
A parallel plate capacitor is connected to a 12 V battery and given enough time to come to a full charge. If the capacitor stays connected to the battery and the plate spacing is doubled, what happens?
- the voltage across the capacitor decreases
- the voltage across the capacitor increases
- the charge on the capacitor decreases
- the charge on the capacitor increases
- both voltage and charge change
If the capacitor is disconnected from the battery and the plate spacing is now doubled, what is the new value of the voltage?
Physics Education Research at UNG 