A capacitor is formed from two thin circular metal plates; each plate has a diam

Question

A capacitor is formed from two thin circular metal plates; each plate has a diameter of. The plates are separated by 5.0 mm and in a 15 Y battery. a)What are the values of capacitive ,charge ,and the energy U stored is the capacitor? b)The plates of the capacitor are disconnected to the battery , then a stack of paper (dielectric constant=3.5 ) is inserted between the two plates, filling the volume of the capacitor , what are the new values of capacitance ,charge , and the energy U stored in the capacitor?

Explanation / Answer

capacitance=charge/potential difference or q/v

si unit is farad.

charge=capacitance*potential difference or cv

si unit is coulomb

energy U=1/2cv2=q2/2c

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