APFIVE Electric Field in a Capacitor with a Dielectric
A parallel-plate capacitor with plates of area A and separation d is charged to Q and then disconnected from the battery. If a dielectric with constant κ = 3 is inserted completely between the plates, what happens to the electric field between the plates?
A
It increases by a factor of 3
B
It decreases by a factor of 3
C
It remains the same
D
It decreases by a factor of 9
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