Question

A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon

A. area of loop

B. no. of turns in loop

C. shape of loop

D. strength of current and magnetic field

Answer 1

The torque on a current-carrying loop in a uniform magnetic field is independent of the loop's shape. It depends on the number of turns, area of the loop, current strength, and magnetic field strength.

"the correct option is approximately option C"

Step-by-step explanation:

The student is asking about torque acting on a current-carrying loop when it is placed in a uniform magnetic field. Based on the formula for torque on a current-carrying loop (T = NIAB sin θ), we can understand that torque depends on the number of turns in the loop (N), the area of the loop (A), the strength of the current (I), and the magnetic field (B), as well as the angle (θ) between the normal to the plane of the loop and the direction of the magnetic field.

However, the shape of the loop is not mentioned in the formula, which implies that the torque is independent of the shape of the loop as long as the area remains constant.

The correct answer to the student's question is that the torque acting on a current-carrying loop does not depend upon the shape of the loop (C).