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Old Feb 24th 2016, 07:06 PM   #1
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electric constant of a capacitator assignment question

A parallel plate capacitor has a capacitance of 1.5F with air between the plates.

The capacitor is connected a 12V battery and charged. The battery is then
removed. When a dielectric is placed between the plates, a potential difference of 5.0V is measured across the plates. What is the dielectric constant of the
material?

This is one of the 3 physics Q's on an assignment that is beyond me. Anyone have any ideas?
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