Question

Describe the activity that shows that a current-carrying conductor experiences a force perpendicular to its length and the external magnetic field. How does Flemings' left-hand rule help us to find the direction of the force acting on the current-carrying conductor?

Answer 1

The direction of force in a current carrying conductor can be understood clearly From Fleming's left hand rule.
Fleming's left hand rule states that When an electric current passes through a straight wire, an external magnetic field is applied across that flow, the wire experiences a force perpendicular both to the field and to the direction of the current flow. This rule can be used to determine the direction of the force, magnetic field and current.
A left hand can be held, so that the thumb, first finger and second finger are held mutually perpendicular to each other. The thumb represents the direction of Motion resulting from the force on the conductor. The first finger represents the direction of the magnetic Field. The second finger represents the direction of the Current. Please refer the figure given below.