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July 30, 2014

Homework Help: Physics

Posted by Jeff on Monday, February 6, 2012 at 7:43pm.

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. (C is the capacitance and U is the stored energy.) Answer the following questions regarding the capacitor charged by a battery. For each statement below, select True or False.

1.) After being disconnected from the battery, inserting a dielectric with κ will decrease V.

2.) With the capacitor connected to the battery, inserting a dielectric with κ will increase C.

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

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

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

6.) After being disconnected from the battery, decreasing d increases U.

Can't figure out why this is not correct.
1-T
2-F
3-T
4-F
5-F
6-F

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