The electrical resisitivities of four materials A, B, C and D are given below :
A) 110 x 10-8 Ω m
B) 1.10 x 1010 Ω m
C) 01.0 x 10-8 Ω m
D) 2.3 x 103 Ω m
Which material is : (a) good conductor (b) resistor (c) insulator, and (d) semi-conductor ?
(a) Good conductor = C (10×10-8 ohm-m)
(b) Resistor= A (110×10-8 ohm-m)
(c) Insulator= B (1×1010 ohm-m)
(d) Semiconductor= D (2.3 ×103 ohm-m)