Magnetic effects of electric currents,a compass needle gets deflected,magnetic fields lines are closed curves,magnetic field
Magnetic effects of electric currents Why does a compass needle gets deflected when brought near a current carrying conductor? A compass needle gets deflected when brought near a current carrying conductor because an electric current carrying wire produce magnetic field around it. We can illustrate this with the such example We take a straight copper wire and place this copper wire between the points (X and Y). in the electric circuit. The wire is kept perpendicular to the plane of the paper. Also a compass is kept near horizontally to the copper wire. And when circuit is completed , then current is passed through this circuit. And found that compass needle gets deflected. It means to say that there is magnetic field produced when electric current is passing through the copper wire. X Y Why does a compass needle gets deflected when brought near a magnetic bar ? Bar m