A current carrying loop lies on a smooth horizontal plane.Then,
As the loop is placed in horizontal plane, so area vector is along vertical direction. From , as is in vertical direction, i would be the plane of loop only. So, option (1) is wrong because for rotation of loop about its own axis must be along vertical direction. (2) is correct because we can produce torque in the plane of the loop and due to this the loop can tip over.
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A non-conducting non-magnetic rod having circular cross section of radius R is suspended from a rigid support as shown in the figure. A light and small coil of 300 turns is wrapped tightly at the left end of the rod where uniform magnetic field B exists in vertically downward direction.Air of density hits the half of the right part of the rod with velocity V as shown in the figure. What should be current in clockwise direction (as seen from O) in the coil so that rod remains horizontal? Give answer in m A. Given
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