schoolscienceproject.blogspot.in
Graphite Conductor
Connect a torch
bulb with a battery by means of a pair of scissors and a pencil. The bulb
lights up. From the long tongue of the battery, the negative pole, the current
flows through the metal of the scissors to the lamp. It makes it glow, and
flows through the graphite shaft to the positive pole of the battery. Therefore
graphite is a good conductor: so much electricity flows even through a pencil “lead”
on paper, that you can hear crackling in earphones.
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