Question

The figure shows a stationary conducting loop adjacent to a horizontal current-carrying wire. For which of the following conditions will a counter- clockwise induced current circulate in the stationary loop? Stationary conducting loop Counter- clockwise induced current - Current-carrying wire The current in the horizontal wire flows to the right and its value is decreasing. O The current in the horizontal wire flows to the right and its value is increasing. The current in the horizontal wire flows to the left and its value is decreasing. O The current in the horizontal wire flows to the left and its value is increasing. Both choices A and D.

Answer 1

As given that the direction of induced currrent in the loop is in counter clockwise . So magnetic field due to loop is out of the plane. Now according to lenz law, to create the induced emf in the coil , the magnetic field due to wire should be opposite to the magnetic field due to loop . So magnetic field due to wire is in the direction of in the plane . So current in the wire will be to the left and increasing or to the right and decreasing so both A and D choice are correct.