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.) Select true or false for each statement.

1)With the capacitor connected to the battery, inserting a dielectric with κ > 1 will decrease U.

2)With the capacitor connected to the battery, decreasing d increases C.

3)After being disconnected from the battery, decreasing d increases C.

4)With the capacitor connected to the battery, inserting a dielectic with κ > 1 will decrease Q.

5)After being disconnected from the battery, increasing d decreases V.

6)With the capacitor connected to the battery, decreasing d decreases Q.

Can someone explain those relations pls?

Answer 1