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A horizontal straight conductor of mass m and length l is placed in a uniform vertical magnetic firled of magnitude B. An amount of charge Q passes through the rod in a very short time such that the conductor begins to move only after all the charge has passed throught is. Its initial velocity will be

A

`BQlm`

B

`(BQ)/(lm)`

C

`(BQl)/m`

D

`(Bl)/(mQ)`

Text Solution

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The correct Answer is:
C
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