Question

When the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. Explain.
Topic: Electric Current

Answer 1

We know that flowing electric current creates magnetic field around it, similarly here also magnetic filed is created and thus affects the N-S direction of compass.

Answer 2

This is all because the electric current generates a magnetic field around the conductor, so due to this phenomenon the Compass needle gets deflected.

And also due to the flow current is from its +ve terminal to its -ve terminal which causes the compass needle deflecting in North-South position.