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A wire having mass m and length 1 can fr...

A wire having mass m and length 1 can freely slide on a pair or parallel smooth horizontal rails placed in vertical magnetic field B. The rails are connected by a capacitor of capacitance C . The electric resistance of the rails and the wire is zero .If a constant force F acts on the Wire as shown in the figure . Then ,the acceleration of the wire can be given as

A

`a=(C^(2)B^(2)l-F)/(m)`

B

`a=(F)/(m+CBl)`

C

`a=(FC^(2)B^(2)l)/(m)`

D

`a=(F)/(m+C^(2)B^(2)l)`

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The correct Answer is:
D
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