Two identical thin bar magnets each of length $l $ and pole strength $m$ are placed at right angle to each other with north pole of one touching south pole of the other. Magnetic moment of the system is
Two identical thin bar magnets each of length $l $ and pole strength $m$ are placed at right angle to each other with north pole of one touching south pole of the other. Magnetic moment of the system is
- A
$ml$
- B
$2\,ml$
- C
$\sqrt 2 \,ml$
- D
$\frac{1}{2}\,ml$
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