Question
In: Physics
A dielectric-filled parallel-plate capacitor has plate area A = 30.0 cm2 , plate separation d= 8.00...
A dielectric-filled parallel-plate capacitor has plate area A = 30.0 cm2 , plate separation d= 8.00 mm and dielectric constant k = 4.00. The capacitor is connected to a battery that creates a constant voltage V= 15.0 V . Throughout the problem, use ϵ0 = 8.85×10−12 C2/N⋅m2.
A) Find the energy U1 of the dielectric-filled capacitor.
Express your answer numerically in joules.
B) The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy U2 of the capacitor at the moment when the capacitor is half-filled with the dielectric.
Express your answer numerically in joules.
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, U3
Express your answer numerically in joules.
D) In the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work W is done by the external agent acting on the dielectric?
Express your answer numerically in joules.
Solutions
genius_generous answered 2 years agoRelated Solutions
A dielectric-filled parallel-plate capacitor has plate area A = 10.0 cm2 , plate separation d =...
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8.85×10−12 C2/N⋅m2 .
a) Find the energy U1 of the dielectric-filled capacitor.
Express your answer numerically in joules.
b) The dielectric plate is now slowly pulled out of the
capacitor, which remains connected...
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8.85×10−12 C2/N⋅m2 .
PART A:
U1 was found:
U1 =
3.84×10−10
J
PART B:
The dielectric plate is now slowly pulled out of the capacitor,
which remains connected to the battery. Find the...
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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
JJ
Submit
Part B
The dielectric plate is...
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(a) What is the charge on the capacitor before and after the
dielectric is inserted?
Qi
=
C
Qf
=
C
(b) What is the capacitance of the capacitor after...
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