what happens to the needle of a compass kept nearby when electric current is switched on in a wire? why does this happen?
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it will show a deflection
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To get the answer of this question, I would like to suggest an activity.
Make s simple electrical circuit consisting of a long straight wire, switch/pug key, a torch bulb and a batter (of nine volts, i.e sis cells of 1.5 volts). Now, hold a compass needle parallel to and over the wire. Switch on the current (for a short time only). What do we observe? As the current flows through the wire, the needle gets deflected.This shows that the current carrying wire can act like a 'magnet'.
I hope now you can understand...
@PoojaBBSR
Make s simple electrical circuit consisting of a long straight wire, switch/pug key, a torch bulb and a batter (of nine volts, i.e sis cells of 1.5 volts). Now, hold a compass needle parallel to and over the wire. Switch on the current (for a short time only). What do we observe? As the current flows through the wire, the needle gets deflected.This shows that the current carrying wire can act like a 'magnet'.
I hope now you can understand...
@PoojaBBSR
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