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Questions  

How does the potential difference change with the effect of the dielectric when the battery is kept disconnected from the capacitor?

a
Increases
b
Decreases
c
Remains constant
d
Becomes zero

detailed solution

Correct option is B

When the dielectric slab is introduced between the plates, the induced surface charge on the dielectric reduces the electric field. The reduction in the electric field results in a decrease in potential difference.V = Ed = E0Kd=V0K

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