Electric Field in a Capacitor with Dielectric
A parallel-plate capacitor with plate area A and separation d is charged to Q and then disconnected from a battery. A dielectric slab with a dielectric constant of κ = 2.5 is subsequently inserted, filling half the volume between the plates. What is the effect on the electric field in the region that does not contain the dielectric?
A
Increases by a factor of 2.5
B
Decreases by a factor of 2.5
C
Increases by a factor of 1.75
D
Remains unchanged
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