Question

The transistor are usually made of(a) metal oxides with high temperature coefficient of resistivity(b) metals with high temperature coefficient of resistivity(c) metals with low temperature coefficient of resistivity(d) semiconducting materials having low temperature coefficient of resistivity

Answer 1

You might have noticed on the table for specific resistances that all figures were specified at a temperature of 20o Celsius. If you suspected that this meant specific resistance of a material may change with temperature, you were right!

Resistance values for conductors at any temperature other than the standard temperature (usually specified at 20 Celsius) on the specific resistance table must be determined through yet another formula

Please mark as brain list please

Answer 2

Answer:

Explanation:

Temperature dependent Resistivity -

p =po ( 1+ α  (T-To)

Thus, the devices with low temperature coefficient of resistivity are devices whose resistance varies markedly with temperature mean having a high temperature coefficient of resistivity. As per their composition, they can have either negative temperature coefficient or a positive temperature coefficient. Thus, the transistors are made of metal with high-temperature co-efficient of resistivity.