Question

Find the torque in a conductor having current 2A, flux density 50 units, length 15cm and distance of 8m.

(a) 120

(b) 240

(c) 800

(d) 350

I had been asked this question in an international level competition.

I want to ask this question from Magnetic Torque in chapter Magnetic Forces and Materials of Electromagnetic Theory

Answer 1

Correct answer is (a) 120

To explain: The torque on a conductor is given by T = BILd, where L x d is the area of the conductor. Thus the torque will be, T = 50 x 2 x 0.15 x 8 = 120 units.