Final answer:
The torque acting on a current carrying loop in a uniform magnetic field does not depend upon the area of the loop, the value of the current, or the magnetic field.
Step-by-step explanation:
The torque acting on a current carrying loop in a uniform magnetic field does not depend upon the area of the loop, the value of the current, or the magnetic field. So the correct answer is (d) none of these.
The torque on a current-carrying loop is given by the formula T = NIAB sin(theta), where N is the number of turns in the loop, I is the current, A is the area of the loop, B is the magnetic field strength, and theta is the angle between the normal to the loop and the magnetic field.
From the formula, we can see that the torque depends on the number of turns N, which is a constant for a given loop, and the value of sin(theta), which is determined by the orientation of the loop with respect to the magnetic field. The area A, current I, and magnetic field B do not affect the torque.