Eddy currents

Physics

ELECTROMAGNETIC INDUCTION

ELECTROMAGNETIC INDUCTION.

Electromagnetism is the effect resulting from the interaction between an electric current and a magnetic field. This effect brings about induced electromagnetic force (e.m.f) and the resulting current is called induced current.

Experiments on electromagnetic induction

When the wire is moved up the galvanometer deflects in one direction then the opposite direction when moved downwards.

When moved horizontally or held in a fixed position there is no deflection in the galvanometer.

This shows that e.m.f is induced due to the relative motion of the wire or the magnet.