A flat rectangular coil of the circular with radius a=10cm consisting of N=100 l

Question

A flat rectangular coil of the circular with radius a=10cm consisting of N=100 loops of wire, carrying a current of I=.1A is placed in a uniform magnetic field B=.01T that is making an angle theta = 20 degreees with the plane of the current loop. What is the value of the magnetic moment M of the loop? What is the magnitude of the torque t acting on the loop. In which direction will the loop rotate under the influence of this torque A flat rectangular coil of the circular with radius a=10cm consisting of N=100 loops of wire, carrying a current of I=.1A is placed in a uniform magnetic field B=.01T that is making an angle theta = 20 degreees with the plane of the current loop. What is the value of the magnetic moment M of the loop? What is the magnitude of the torque t acting on the loop. In which direction will the loop rotate under the influence of this torque

Explanation / Answer

formula for magnetic moment M of the loop is

u = NIA

= 100(0.1) pi ( 0.1)^2

=0.314 A m^2

(B)

Torque = uB sin theta = 0.314(0.01) sin 20 = 1.07 * 10^-3 Nm

(c) from the right hand rule upward direction

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