Forces on Current-Carrying Wires
Moving charges in magnetic fields experience forces.
Current in a wire is just a flow of charges.
If charges are moving perpendicular to magnetic fields, they experience a force which is applied to the wire.
Example 1: Current Through a Wire
A straight wire of length 1 m carries a current of 100 A through a magnetic field of 1 Tesla. Find the force on the wire
Example 2: Net Torque
Determine the direction of the net torque on the current-carrying closed circuit
Example 3: Force on a Curved Wire
The curved wire carries constant current I through a uniform magnetic field B as shown. Find the net force acting on the wire.