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April 20, 2014

Homework Help: Physics

Posted by Robert Soos on Sunday, February 19, 2012 at 11:13pm.

When an air capacitor with a capacitance of 380 nF (1 {\rm nF} = 10^{-9}\;{\rm F}) is connected to a power supply, the energy stored in the capacitor is 1.9510−5 J. While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space between the plates. This increases the stored energy by 2.6210−5 J.
A) What is the potential difference between the capacitor plates?
B)What is the dielectric constant of the slab?

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