With reference to semi-conductors answer the following :
(i) What is the change in the resistance of the semi-conductor with increase in temperature ?
(ii) Name the majority charge carriers in n-type semi-conductor.
(iii) What is meant by doping ?
(i) With increase in temperature, resistance decreases.
(ii) Majority charge carriers in n-type is electrons.
(iii) The addition of impurities in intrinsic semiconductor is called doping.