Mathematics · Moving Charges and Magnetism
Two infinitely long straight parallel wires, separated by a distance d, carry the same current 'I' in the same direction. The attractive force per unit length between them is F. If the current in one of the wires is tripled while keeping all other parameters constant, what will be the new magnitude of the force per unit length between them?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1F/3
- 2F/9
- 39F
- 43F✓
Correct answer
3F
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