Moving Charges and Magnetism

Question: A long straight wire carries a current of $\pi \,amp.$ The magnetic field due to it will be $5 \times {10^{ - 5}}{\rm{ }}weber/{m^{\rm{2}}}$ at what distance from the wire $[{\mu _o} = $permeability of air]

1) ${10^4}{\mu _o}$ metre

2) $\frac{{{{10}^4}}}{{{\mu _o}}}$ metre

3) ${10^6}{\mu _o}$ metre

4) $\frac{{{{10}^6}}}{{{\mu _o}}}$ metre

Solution:

Explanation: No Explanation

Biot-Savart's Law Amperes Law

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