Q. With the rise in temperature the insulating property of an insulator:
Solution:
When resistance FALLS with an increase in temperature, the material is said to have a NEGATIVE TEMPERATURE COEFFICIENT. In general, conductors have a POSITIVE temperature coefficient, whilst (at high temperatures) insulators have a NEGATIVE temperature coefficient.
Related Questions
Q. Type of microphone which converts acoustic signals to change in capacitance is
View SolutionQ. If the supply frequency to the transformer is increased the iron loss will:
View SolutionQ. Buchholz’s relay gives warning and protection against
View Solution
Get Question Bank
Strengthen Your Practice with our comprehensive question bank.
