Question

Question 35:
The electrical resistivities of four materials A, B, C and D are given below :

Which material is : (a) good conductor (b) resistor (c) insulator, and (d) semiconductor ?

Lakhmir Singh Physics Class 10

Answer 1

Answer:

A) silver

B) carbon

C) rubber

D) silicone

Answer 2

Dear Student,

You forgot to mention resistsivies, don't worry I'll add that.

◆ Given resistivities -

1. A = 110x10^-8 Ohm-m
2. B = 1x10^10 Ohm-m
3. C = 10x10^-8 Ohm-m
4. D = 2.3x10^3 Ohm-m

● Answers with explaination -

(a) As material C has lowest resistivity, it will be good conductor of electricity.

(b) Material A having low resistivity will be used as resistor.

(c) As material B have highest resistivity, it will act as insulator.

(d) Material D having midrange resistivity will act as semiconductor.

Hope this helps you..