When current passes through a conductor kept near a magnetic needle , the magnetic needle deflects . What is the reason for this.

When current is passed through a conductor a magnetic field is produced. The direction of the magnetic field can be found out using the right hand thumb rule. State this rule.

When a current carrying conductor is placed in a magnetic field it experiences a force. : Arrive at the expression for the force experienced by the conductor.

If the conductor carrying current is lying parallel to the magnetic field what will be the force?

When passing through a magnetic field the largest deflection is experienced by

When electric current is passed through a resis tance wire, it get heated up" What happens to the heat energy developed, if the current through the wire is doubled.