Question

How to identify a wire carrying current from a wire carrying no current?

Answer 1

Hey Mate!

A wire which carries current will change the direction of the neddle of a magnetic compass placed near it.

But a wire which does not carry current doesn't affect a magnetic compass.


Hope it helps

Hakuna Matata :))

Answer 2

How to identify a wire carrying current from a wire carrying no current?

A current carrying wire will produce a deflection in needle as it poses a magnetic field.

Whereas, no current carrying wire will not produce any deflection in needle as it do not poses magnetic field.