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A metallic rod of mass per unit leng...

A metallic rod of mass per unit length `0.5 Kg . M^(-1) ` islying horizontally on a smooth inclined plane which makes an angle of ` 30 ^(@)` with the horizontal . The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0.25 T is acting on it in the vertical direction . The current flowing in the rod to keep it stationary is

A

`14.76 A`

B

`5.98 A`

C

`7.14 A `

D

`11.32 A`

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