Moving Charges and Magnetism

Question: Magnetic fields at two points on the axis of a circular coil at a distance of $0.05 m$ and $0.2 m$ from the centre are in the ratio $8 : 1$. The radius of the coil is

1) 1.0 m

2) 0.1 m

3) 0.15 m

4) 0.2 m

Solution:

Explanation: No Explanation

Biot-Savart's Law Amperes Law

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