Moving Charges and Magnetism

Question: A current of 2 amp. flows in a long, straight wire of radius 2 mm. The intensity of magnetic field on the axis of the wire is



1) $\left( {\frac{{{\mu _o}}}{\pi }} \right) \times {10^3}$Tesla
2) $\left( {\frac{{{\mu _o}}}{{2\pi }}} \right) \times {10^3}$Tesla
3) $\left( {\frac{{2{\mu _o}}}{\pi }} \right) \times {10^3}$Tesla
4) Zero
Solution: Explanation: No Explanation
Biot-Savart's Law Amperes Law

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