MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

Two long conductors separated by a distance carry currents and in the same direction. They exert a force 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 . The new value of the force between them is

Answer: (D)

Solution

; the new force is , the negative sign meaning repulsion

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Question ID VK-078813