A small current loop of area a00008m2 and moment of inertia, Ask an Expert

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A small current loop of area A=0.0008m2 and moment of inertia I=6.9e-07kgm2 carries a current i=0.0039A with its magnetic moment perpendicular to the Earth's magnetic field. The magnitude of the Earth's field is B=4.2e-05T.

a) What is the magnitude of the net torque T on the loop?

T = ____ Nm

b) What is the angular acceleration a of the loop?

a = ___ rad/s2

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