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A solenoid carries a current of 1 ampere
and has 1000 turns. It has an area of cross-
section of 2 cm2 and is 50 cm long.
It is observed that the solenoid has the
same magnetic moment as a bar magnet of
length 20 cm. What is the pole strength of
the bar magnet?
O 2 Am
O 1 Am
O 20 Am
O 4 Am
Q.

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