Two identical thin bar magnets, each of length L and pole strength m are placed at right angles to each other, with the N pole of one touching the S-pole of the other. Find the magnetic moment of the system.

Options

A. ml
B. 2ml
C. `sqrt2 ml`
D. `(1)/(2) ml`

Answer

C

Explanation

`M_("net")= sqrt((ml)^(2) + (ml)^(2))= sqrt2 ml`