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the magnetic induction field due to a north pole of strength 10Am and 5cm away from the pole in weber/msquare
Magnitude of magnetic induction due to a pole of strength m at a distance r from it isB = (0 / 4)(m / r2) , 0 / 4 = 10–7 H.m = 10 Am, r = 5 cm = 5 x 10–2 mSo, magnitude of magnetic induction, B = (10–7)(10 / 25 x 10–4) = 4 x 10–12 Wb / m2.
There is a slight mistake in calculation. The magnitude of magnetic induction should beB = 4 x 10–4 Wb / m2.
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