Force acting on a Current carrying conductor
- An electric current flowing through a conductor produces a magnetic field. This field will exert a force on a magnet placed in the proximity of the conductor.
- This means that the magnet also will exert an equal and opposite force on the current-carrying conductor.
- The direction of this force is given by Left Hand Thumb Rule- Stretch the thumb, forefinger and middle finger of your left hand such that they are mutually perpendicular to each other (as shown in the figure). If the middle finger points in the direction of the current in the conductor, the forefinger points in the direction of the magnetic field and the thumb points in the direction of the force acting on the conductor.
- Devices that use this applications is electric motor, electric generator, loudspeakers, microphones and measuring instruments.