A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field B, such that B is perpendicular to the plane of the loop. The magnetic force acting on the loop is?

Three long straight wires A, B, and C are carrying currents as shown in the figure. Then the resultant force on B is directed :

Two identical straight wires carry current in opposite directions as shown in the figure above. Identify which of the following graphs represents the magnetic force acting on each wire?

The force of repulsion between two parallel wires is f when each one of them carries a certain current I. If the current in each is doubled, the force between them would be?

It two parallel wires carry current in opposite directions

What is the direction of the velocity of a negative charge that experiences the magnetic force shown in the Figure, assuming it moves perpendicular to B?