Thu July 12, 2012 By: Bharath Sudhakar

when a compass is kept above or below a current carrying wire will it show deflection till the switch is switched off ????

Expert Reply
Fri July 13, 2012
when the switch is off then the compass will not show deflection after settling once in north south direction.
Then as circuit is switched on the the compass will deflect as there would be magnetic field produced around the current carrying wire.That magnetic field will interact with the magnetic foield of compass and so they will interac t and there will be deflection in the needle..
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