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in Physics by (92.4k points)

A metallic rod of mass per unit length 0.5 kg m-1 is lying 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) 7.14 A

(b) 5.98 A

(c) 14.76 A

(d) 11.32 A

1 Answer

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Best answer

Correct option  (d) 11.32 A

Explanation:

Mass per unit length of a metallic rod is

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