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An infinitely long, straight conductor AB is fixed, and a current $i_{1}$ is passed through it. Another movable straight wire CD of finite length $l$ and carrying current $i_{2}$ is held perpendicular to it and released. Neglect weight of the wire

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The rod CD will move upward and turn clockwise at the same time

The rod CD will move upwards parallel to itself

The rod CD will move downward parallel to itself

The rod CD will move upward and turn anti clockwise at the same time

answer is C.

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Detailed Solution

Since the force on the rod CD is non-uniform it will experience force and torque. From the left-hand side, it can be seen that the force will be upward and torque is clockwise.
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