A circular loop of radius `0*2m` carrying a current of `1A` is placed in a uniform magnetic field of `0*5T`. The magnetic field is perpendicular to the plane of the loop. What is the force experienced by the loop?

Options

A. Circular loop will develop tensile stress
B. Circular loop will develop compressive stress
C. No net force will act on circular loop
D. Circular loop will develop tensile or compressive stress depending on the direction of the current and the magnetic field

Answer

c, d

Explanation

In a uniform magnetic field, net force on the clowed current wire is zero. Hence option (c) is correct .
Magnetic field is applied perpendicular to the plane but the direction of current in the loop is not mentioned. Hence the direction `vec (dl) xx vec B` can be radially inward or outward for all points on the periphery of the disc. In case of radial inward force from all around, compressive stress will be developed and for radial outward force, similarly, tensile stress will be developed. Hence option (d) is correct .