A 300-turn coil of area 25 cm² is placed in an 80 mT magnetic field. If the coil carries a current of 3.3 A, what is the magnitude of the maximum magnetic torque it could experience?

Question

Quizplus · Accepted Answer

The maximum torque experienced by the coil is given by the equation τ = NIABsinθ, where N is the number of turns, I is the current, A is the area of the coil, B is the magnetic field strength, and θ is the angle between the normal to the coil and the magnetic field direction.
Thus, τ = (300)(3.3)(25×10^-4)(80×10^-3)sin90 = 0.20 N·m. 
Therefore, the correct answer is choice D.

A 300-Turn Coil of Area 25 Cm2 Is Placed in an 80

A 300-Turn Coil of Area 25 Cm² Is Placed in an 80