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The force existing between two infinite parallel conductors is inversely proportional to ________(a) Radius of the conductors(b) Current in one of the conductors(c) The product of the current in the two conductors(d) The distance between the two conductorsThis question was posed to me at a job interview.The doubt is from Magnetic Field Due to an Electric Current in chapter Electromagnetism of Basic Electrical Engineering

Answer»

Correct choice is (d) The distance between the two CONDUCTORS

The explanation: When current is flowing in two DIFFERENT conductors, the force between the two conductors is directly PROPORTIONAL to the PRODUCT of the current in the two conductors and INVERSELY proportional to the distance between the two conductors.



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