a wire of length l carrying a current i is first bent in form of an equilateral triangle, the magnetic field at the the center of an triangle is b1. the same wire is now bent in the form of a circle , the magnetic field at the center is now b2. eachof the coil is kept in a constant magnetic field with its plane perpendicular to magnetic field then torque 1 and torque 2 are torques acting on it resc. a:b1>b2 b:b2>b1 c:torque 1 =torque 2 d:torque 2 =torque1isnot equal to0.solve it

Kevin Nash , 11 Years ago

Grade upto college level