In: Physics
A wire bent with two right angles (forming a u-shape) sits in the xy-plane. The closed end (where the right angles are) is on the x-axis. The sides parallel to the y-axis run in the -y direction. A movable wire, parallel to the x-axis but not on the x-axis at any time, moves in the +y direction. If a magnetic field going in the -z direction baths the circuit, what is the direction of the induced current in the movable wire?
When the wire is moved in +y direction the flux linked with the loop goes on decreasing as the area shrinks, to oppose this a current is induced in the loop which is clockwise in direction. But here, it is asking about the direction of induced current in the movable wire. So the direction of induced current in the movable wire is towards the -x-direction.