A parallel plate capacitor with plate separation d is connected to a battery. Th

Question

A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V Volts. (C is the capacitance and U is the stored energy.)

a) Select true or false for each statement.

1. After being disconnected from the battery, inserting a dielectric with kappa > 1 will increase U.
2. With the capacitor connected to the battery, inserting a dielectric with kappa > 1 will decrease U.
3. With the capacitor connected to the battery, decreasing d increases U
4. After being disconnected from the battery, increasing d increases U.
5. With the capacitor connected to the battery, decreasing d decreases Q.
6. After being disconnected from the battery, increasing d decreases V.

Explanation / Answer

1-T 2-F 3-T 4-F 5-T 6-F

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