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

The rod CD will move upwards parallel to itself

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The rod CD will move downward parallel to itself

No worries! We‘ve got your back. Try BYJU‘S free classes today!

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

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

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

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C The rod CD will move upward and turn clockwise at the same time
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.

Suggest Corrections

Similar questions

Q. An infinitely long straight conductor is fixed and carries a current

I_{1}

. Another movable straight wire

CD

(of finite length ) carrying a current

I_{2}

is held perpendicular to it and released. Neglecting its weight, which of the statement is correct.

Q. A current

I_{1}

carrying wire AB is placed near another long wire CD carrying current

I_{2}

. If wire AB is free to moves, it will have:

Figure (38-E26) shows a straight, long wire carrying a current i and a rod of length l coplanar with the wife and perpendicular to it. The rod moves with a constant velocity u in a direction parallel to the wire. The distance of the wire from the centre of the rod is x. Find the motional emf induced in the rod.

A roller is made by joining together two cones at their vertices O. It is kept on two rails AB and CD which are placed asymmetrically (see figure), with its axis perpendicular to CD and its centre O at the centre of line joining AB and CD (see figure). It is given a light push so that it starts rolling with its centre O moving parallel to CD in the direction shown. As it moves, the roller will tend to: