A dielectric-filled parallel-plate capacitor has plate area AAA = 20.0 cm2cm2 , plate separation ddd =...

A dielectric-filled parallel-plate capacitor has plate area AAA = 20.0 cm2cm2 , plate separation ddd = 5.00 mmmm and dielectric constant kkK = 5.00. The capacitor is connected to a battery that creates a constant voltage VVV = 12.5 VV . Throughout the problem, use ϵ0ϵ0epsilon_0 = 8.85×10⁻¹² C2/N⋅m2C2/N⋅m2 .

Part A

Find the energy U1U1U_1 of the dielectric-filled capacitor.

Express your answer numerically in joules.

View Available Hint(s)

U1U1U_1 =

nothing

Submit

Part B

The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy U2U2U_2 of the capacitor at the moment when the capacitor is half-filled with the dielectric.

Express your answer numerically in joules.

View Available Hint(s)

U2U2U_2 =

nothing

Submit

Part C

The capacitor is now disconnected from the battery, and the dielectric plate is slowly removed the rest of the way out of the capacitor. Find the new energy of the capacitor, U3U3U_3.

Express your answer numerically in joules.

View Available Hint(s)

U3U3U_3 =

nothing

Solutions

Expert Solution

genius_generous answered 2 hours ago

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