A conducting loop carrying a current l is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to

Options

A. Contract
B. expand
C. move toward +ve x-axis
D. move toward -ve x-axis

Answer

b

Explanation

Using Fleming's left hand rule, we find that a force is acting in
the radically outward direction throughout the circumference
of the conducting loop.