The magnetic force on an electric current is the force exerted on a current-carrying wire placed in a magnetic field. This force is perpendicular to both the direction of the current and the direction of the magnetic field.
The direction of the magnetic force on a current-carrying wire is determined by the right-hand rule. If the thumb of the right hand points in the direction of the current and the fingers point in the direction of the magnetic field, then the palm will face in the direction of the magnetic force.
The strength of the magnetic force on an electric current depends on the strength of the magnetic field, the length of the current-carrying wire, and the strength of the current flowing through the wire.
Yes, the magnetic force on an electric current can be used to do work. This is the principle behind electric motors, which convert electrical energy into mechanical energy by utilizing the force of the magnetic field on current-carrying wires.
The direction of the current affects the direction of the magnetic force. If the current is reversed, the direction of the magnetic force will also be reversed. Similarly, if the direction of the magnetic field is reversed, the direction of the magnetic force will also be reversed.