Moving Charges and Magnetism

Question: Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is

Question Image

1) ${\mu _o}i/r$

2) $4{\mu _o}i/r$

3) Zero

4) ${\mu _o}i/4r$

Solution:

Explanation: No Explanation

Biot-Savart's Law Amperes Law

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