Question

You are given only an identical magnet and a iron bar how can you identify the magnet.

Answer 1

Answer:

We can identify the magnet by checking it's magnetic field. take a 12v battery, copper wire {note: that it should be coiled like a spring} , switch,a compass, and a bulb. Now close the electric circuit and then take the identical iron bar and place it close the circuit, we will observe that the compass needle does not show any deflection, then take the identical bar magnet and place it close the coiled copper wire, we will observe that the compass needle gets deflected, this shows that the object is a magnet.

Explanation: