For equilibrium of conductor
ilBcosθ=mgsinθ
i=lBmgtanθ=(lm)Bgtanθ
i=0.5×0.259.8×31=11.3A.
NEET UG 2018 — Physics Electromagnetism
A metallic rod of mass per unit length 0.5kgm−1 is lying horizontally on a smooth inclined plane which makes an angle 30o with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0.25T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is
Held on 30 Apr 2018 · Verified 9 Jul 2026.
14.76A
5.98A
7.14A
11.32A
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