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Consider a wire loop of area A lying on the xy-plane and carries current of magnitude I as shown. It is immersed in a region of uniform magnetic field of magnitude B directed to the +z axis. What is the work done by an external force if the loop is rotated 90° about the x-axis in the counter-clockwise direction?

A. -2IAB

B. -IAB

C. 0

D. IAB

E. 2IAB

Z.
В
y

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