Questions
The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 Am. The induction of magnetic field at a point midway between the poles will be
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Correct option is C
Net magnetic field at mid point P, B=BN+BSwhere BN = magnetic field due to N-poleBS= Magnetic field due to S-poleBN=BS=μ04πmr2=10-7 x 0.010.122=4 x 10-7 T∴Bnet=8 x 10-7 T
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Due to a small magnet, intensity at a distance x in the end on position is 9 gauss. What will be the intensity at a distance on broad side on position?
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