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A conductor of length l is placed in E -...

A conductor of length l is placed in E - W direction on a plane. Earth's horizontal magnetic field is B. The amount of charge passed through it when it is found to jump to a hight h is

A

`(1)/(Bmgh)`

B

`sqrt(2gh)/(Blm)`

C

`(gh)/(Blm)`

D

`(msqrt(2gh))/(Bl)`

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