A rectangular loop is pivoted about one side (length 0.060m), that coincides wit

Question

A rectangular loop is pivoted about one side (length 0.060m), that coincides with the y-axis. The end (length 0.020m) of the loop that lies in the xz-plane makes an angle of 37 degrees with the x-axis, as shown in the sketch. The loop carries a current of I=69A in the direction shown. (In the side of the loop that is along the y-axis the current is in the +y direction.) If there is a uniform magnetic field of magnitude 9.7T in the -x direction, find the magnitude of the torque that the magnetic field exerts on the loop.

Explanation / Answer

torque acting on a rectangular loop is T = NiAB sin theta

where N = no. of turns

i = current

A= area

B = magnetic field

T = 1* 69 * (0.06*0.02) * 9.7 * Sin 37

T = 0.4833 Nm

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