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If length of current carrying conductor increases, what is the effect on the force?

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in Basic Electrical Engineering by (88.7k points)
If length of current carrying conductor increases, what is the effect on the force?

(a) increases

(b) decreases

(c) remain same

(d) become zero

I had been asked this question during an interview.

My query is from Magnetic Field Due to an Electric Current topic in chapter Electromagnetism of Basic Electrical Engineering

1 Answer

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Best answer
Right choice is (a) increases

The best I can explain: Force of infinite conductor is given by Bil if B, i, l are mutually perpendicular

F/l = Bi = µ0i1i2/2πd if d is a separation of two infinite parallel conductors. So, as length of conductor increases force increases.

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