The intensity of a magnetic field is Hand moment of magnet is M. The maximum potential energy is

Options

A. MH
B. 2MH
C. 3MH
D. 4MH

Answer

A

Explanation

`P.E=-MHcostheta," For max : value of P.E," theta=180^@`
`therefore"Max "P.E=-MHcostheta=-MHcos180^@=MH`