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Member 323079 · 04-30-2012, 11:13 PM

2 µF capacitor, 12 V battery. The capacitor is fully charged and with the battery still connected, an insulator with a dielectric constant equal to 4 is inserted into the capacitor.

How much work is required to insert the dielectric?

The answer is 4.3*10^-4

The book has the mathematical answer, but I don't understand how they did what they did.

thanks.

04-30-2012, 11:13 PM	#1
Member 323079 2K Member Join Date: Apr 2010 Posts: 2,389	Dielectric insertion 2 µF capacitor, 12 V battery. The capacitor is fully charged and with the battery still connected, an insulator with a dielectric constant equal to 4 is inserted into the capacitor. How much work is required to insert the dielectric? The answer is 4.3*10^-4 The book has the mathematical answer, but I don't understand how they did what they did. thanks.