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A air filled parallel plate capacitor ha...

A air filled parallel plate capacitor having circular plates of diameter D is given a charge Q.The magnitude of the force acting between plates is

A

`(Q^(2))/( 2epsilon_(0))`

B

`(Q^(2))/( 2pi D^(2) epsilon_(0))`

C

`(Q^(2))/( pi D^(2) epsilon_(0))`

D

`(2Q^(2))/( pi epsilon_(0)D^(2))`

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