Q5.21Multiple choice
Verify the Ampere’s law for magnetic field of a point dipole of dipole moment m = m kˆ . Take C as the closed curve running clockwise along
- (i)the z-axis from z = a > 0 to z = R;
- (ii)along the quarter circle of radius R and centre at the origin, in the first quadrant of x-z plane;
- (iii)along the x-axis from x = R to x = a, and
- (iv)along the quarter circle of radius a and centre at the origin in the first quadrant of x-z plane.