# Question 80 of 90 AB and CD are smooth parallel rails, separated by a distance l, and inclined to the horizontal at an angle $\theta$. A uniform magnetic field of magnitude B, directed vertically downwards, exists in the region. EF is a conductor of mass m, carrying a current i. For EF to be in equilibrium,

Bilcos(theta)=mgsin(theta) Bil=mgtan(theta) Thanks
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