Question

Figure shows a long current carrying wire and a rectangular loop moving with velocity $v$. The induced current in the loop is

• A. in clockwise sense
• B. in anticlockwise sense
• C. in clockwise, then anti-clockwise sense
• D. zero

Answer 1

The correct option is D zero

We know that the magnetic field due to a long current carrying wire is inversely proportional to the perpendicular distance from the wire.

In the given case, the loop is moving parallel to the wire.

Therefore, the perpendicular distance of the loop is constant from the wire and hence, the flux linked with the loop is also constant.

So, there will be no induced emf and current in the loop.

Hence, option $\left(D\right)$ is the correct answer.