Moving Charges and Magnetism

Question: The unit of electric current “ampere” is the current which when flowing through each of two parallel wires spaced 1 m apart in vacuum and of infinite length will give rise to a force between them equal to

1) $1\,N/m$

2) $2 \times {10^{ - 7}}\,N/m$

3) $1 \times {10^{ - 2}}\,N/m$

4) $4\pi \times {10^{ - 7}}\,N/m$

Solution:

Explanation: No Explanation

Force and Torque on a Current Carrying Conductor

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