Categories > Moving Charges and Magnetism > Biot-Savart's Law > The earth's magnetic induction at a certain point is $7 \times {10^{ - 5}}Wb/{m^2}.$ This is to be annulled by the magnetic induction at the centre of a circular conducting loop of radius $5 cm$. The required current in the loop is

Moving Charges and Magnetism

Question: The earth's magnetic induction at a certain point is $7 \times {10^{ - 5}}Wb/{m^2}.$ This is to be annulled by the magnetic induction at the centre of a circular conducting loop of radius $5 cm$. The required current in the loop is


1) 0.56 A
2) 5.6 A
3) 0.28 A
4) 2.8 A
Solution: Explanation: No Explanation
Biot-Savart's Law Amperes Law

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