Name a device which works on the magnetic effect of current.
Electric Ball is a device which works on the magnetic effect of current. It is used to produce sound.
Name one device which works on the principle of magnetic effect of current.
(a) A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.
(b) State two ways to increase the force on a current-carrying conductor in a magnetic field.
(c) Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.
Name two devices work on the magnetic effect of current?