Calculate the magnetic field intensity at a distance of \( 20 \mathrm{~cm} \) from a pole of str...

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Calculate the magnetic field intensity at a distance of \( 20 \mathrm{~cm} \) from a pole of strength \( 40 \mathrm{~A} / \mathrm{m} \) in air. What is the magnetic induction at the same point?
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