A bar magnet when placed at an angle of 30o to the direction of magnet – McqOptions

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1.	A bar magnet when placed at an angle of 30o to the direction of magnetic field induction of 5 ´ 10?2 T, experiences a moment of couple 25 ´ 10?6 N-m. If the length of the magnet is 5 cm its pole strength is [EAMCET (Med.) 2000]
A.	2 ´ 10?2 A-m
B.	5 ´ 10?2 A-m
C.	2 A-m
D.	5 A-m
Answer» B. 5 ´ 10?2 A-m

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