Answer / deep

conductors conduct thermal & electrical energy which have a
large no. of free electrons.
insulators does not conduct thermal & electrical energy
having very few free electrons.
The semiconductors are the materials having propeties in
between insulators & conductors.

Answer / touhidee

ENERGY GAP OF CONDUCTOR IS LESS THAN SEMICONDUCTOR AND
ENERGY GAP OF INSULATOR IS VERY HIGH.

Answer / shivram meena

in conductor valence band and conduction band are
overlapping, there is no energy gap in between.
while in insulator conduction band and valence band have
energy gap >5ev. so it does not allow flow of electrons b/w
bands an does to lack of free electron it does not conduct
electricity and heat.
and semiconductor have energy gap less then insulator but
more then conductor.so by small amount of thermal energy
free electrons can be generated.
so semiconductor's resistance is decrease as increase in
temperature while R increase in conductor with temp.

Answer / vanikishore

conductor is a good conductor of electricity eg silicon
germanium insulator is a poor conductor of electricity eg
wood semiconductor conducts partially

Answer / amar

a substance, body, or device that readily conducts heat,
electricity, sound, etc.: Copper is a good conductor of
electricity.

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