The force between two long parallel conductors is inversely proportional to_____________?
Correct answer: D. distance between the conductors
- A. radius of conductors
- B. current in one conductor
- C. product of current in two conductors
- D. distance between the conductors
Explanation
For two long parallel conductors, force per unit length is F/L = μI₁I₂/(2πd), so it varies inversely with their separation d. It is directly proportional to the product of the two currents.
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