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What is the expression for force in a current carrying conductor?(a) F=K/r^2(b) F=Kq/r^2(c) F=Kq1q2/r^2(d) F=Kq1q2/rI had been asked this question during an interview for a job.The question is from Force on a Current Carrying Conductor topic in section Electromagnetism of Basic Electrical Engineering

Answer»

Right option is (c) F=Kq1q2/r^2

The best explanation: The force in a current carrying conductor is directly PROPORTIONAL to the product of the two CHARGES and inversely proportional to the square of the distance between them. HENCE F=Kq1q2/r^2, where K is the constant of PROPORTIONALITY.



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