Answer / jayanta

inside the conductor free electrons are present for the
purpose of conduction when we apply some potential
difference across the conductor the free electrons are
moved and some heat is generated

Answer / tahir

as we know that in conductor,there are free elctron to
move.when battri is applied acroos its terminals free
electrons.due to motion electrons by appling voltage
current is produced.so by foemula P=VI power is traveld in
counductor.

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when transformer oil should be filtered/tested?

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