Two long conductors, separated by a distance 'd' carry currents I_ 1 and I_ 2 in the same…
Physics · JEE Main · NTA Exams — Magnetic Effects of Current and Magnetism
Two long conductors, separated by a distance 'd' carry currents \(I_{1} \text { and } I_{2}\) 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 direction is reversed. The distance is also increased to '3d'. The new value of the force between them is
- \(-2 \mathrm{~F}\)
- \(\frac{F}{\mathbf{3}}\)
- \(\frac{-2 F}{3}\)
- \(\frac{-F}{3}\)
Answer
(D) -F 3
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