APFIVE Electric Field in a Capacitor with Dielectric
A parallel plate capacitor with plate area A and separation d is filled with a dielectric material of relative permittivity εᵣ = 4. If the dielectric is removed, by what factor does the electric field between the plates change if the charge on the capacitor remains constant?
A
It decreases by a factor of 4
B
It remains unchanged
C
It increases by a factor of 4
D
It increases by a factor of 2
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