You have a wire of length L = 0.6 m for making a square coil of a dc motor. The

Question

You have a wire of length L = 0.6 m for making a square coil of a dc motor. The current in the coil is I = 1.0 A, and the magnetic field of the motor has a magnitude ofB = 0.36 T. Find the maximum torque exerted on the coil when the wire is used to make (a) a single-turn square coil and (b) a two-turn square coil.

I JUST NEED A

(a) max = N*mC/sNkg*m^2T (b) max = N*mkg*m^2TNC/s You have a wire of length L = 0.6 m for making a square coil of a dc motor. The current in the coil is I = 1.0 A, and the magnetic field of the motor has a magnitude ofB = 0.36 T. Find the maximum torque exerted on the coil when the wire is used to make (a) a single-turn square coil and (b) a two-turn square coil.

Explanation / Answer

a) Torque = u*B *sin theta

Torque max = u*B = I*A*B = 1* 0.0225* 0.36 = 8.1*10^-3 Nm

b) for two turns area of coil = 5.625*10^-3 m^2

Torque =n* I*A*B = 4.05*10^-3 Nm

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