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An infinitely long, straight conductor A...

An infinitely long, straight conductor `AB` is fixed and a current is passed through it. Another movable straight wire `CD` of finite length and carrying current is held perpendicular to it and released. Neglect weight of the wire

A

The rod CD will move upwards parallel to itself

B

The rod CD will move downward parallel to itself

C

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

D

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

Text Solution

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The correct Answer is:
3
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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