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.) Select true or false for each statement.

Question

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

Answer 1

1) False
2) True
3) False
4) True
5) False
6) True