Does Ampere's law on a closed loop in a region is valid if no current is enclosed by the loop and there are some currents which exist outside the loop.

Find the current in the loop

Find the current in the loop.

Find the current in the loop.

The direction of induced current in the loop

A rectangular loop carrying a current i is placed in a uniform magnetic field B. The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by

Assertion If a magnet is brought closer to a current carrying loop along its axis, then current always decreases in the loop. Reason Magnet is repelled by the loop.

A rectangular loop of wire shown below is coplanar with a long wire carrying current I. The loop is pulled to the right as indicated. What are the directions of the induced current in the loop and the magnetic forces on the left and the right sides of the loop

If you find closed loops of vecB in a region in space, does it necessarily mean that actual charges are flowing across the area bounded by the loops ?