Homework Help: physics please help!!

Posted by archi on Monday, February 6, 2012 at 8:17pm.

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, 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.

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