1.

A `0.1 m` long conductor carrying a current of `50 A` is perpendicular to a magentic field of `1.25 mT`. The mechanical power to move the conductor with a speed of `1ms^(-1)` isA. (a) `0.25 mW`B. (b) `6.25mW`C. ( c) `0.625W`D. (d) `1W`

Answer» Correct Answer - B
(b) `P = Fv = Bilv = 1.25 xx 10^(-3) xx 50 xx 0.1 xx 1 W`
`= 6,25 xx 10^(-3) W = 6.25m W`
An iterating alternating
`P = EI = (Blv) I`


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