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The magnetic induction at a distance 'd'...

The magnetic induction at a distance `'d'` form the magnetic pole of unkown strength `'m'` is `B`. If an identical pole is now placed at a distance of `2d` from the first pole, the force between the two poles is

A

mB

B

`(mB)/2`

C

`(mB)/4`

D

2mB

Text Solution

Verified by Experts

The correct Answer is:
C
`B=mu_(0)/(4pi)m/d^(2)andF=mu_(0)/(4pi)(mm)/((2d)^(2))=mu_(0)/(4pi)m/d^(2)xxm/4=(Bm)/4`
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NARAYNA-MAGNETISM AND MATTER-EXERCISE - 2 (C.W)
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  15. Two identical short bar magnets, each having magnetic moment M, are pl...

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