Two long conductors, separated by a distance d carry current I 1 and I 2 in the same direction. They exert a force F on each other. Now the current in one of them is increased to two times and its directions is reversed. The distance is also increased to 3d. The new value of the force between them is
Text Solution
Verified by ExpertsThe correct answer is:
C
Force acting between two current carrying conductors
…..(i)
where 
distance between the conductors
length of small conductor
Again,
Thus, from Eqs. (i) and (ii), we have
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