Question

In the circuit below, if a dielectric is inserted into then the charge on will 

expand
A

Increase

B

Decrease

C

Remain same

D

Be halved

Medium

Solution

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Correct option is
A

Increase

Initially wire between both capacitors is neutral, as the source is connected. Positive charge moves toward B and negative charge move toward A.

when the dielectric is placed between the capacitor plate charge increase, due to which wire ends B having more positive charge flow toward it and more positive charge flow toward B.

Hence, charge on capacitor  also increase

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