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