A. 1.2 x 10~8 Q-m
B. 1.4 x 10~8 Q-m
C. 1.6 x 10″”8 Q-m
D. 1.8 x 10″8 Q-m
With rise in temperature the resistance of semi-conductors……………..?
A. decreases
B. increases
C. first increases and then decreases
D. remains constant
With rise in temperature the resistance of pure metals…………..?
A. increases
B. decreases
C. first increases and then decreases
D. remains constant
The resistance of a conductor varies inversely as………..?
A. length
B. area of cross-section
C. temperature
D. resistivity
Conductance is reciprocal of…………?
A. resistance
B. inductance
C. reluctance
D. capacitance
The property of a conductor due to which it passes current is called………..?
A. resistance
B. reluctance
C. conductance
D. inductance
Out of the following which is an insulating material…………?
A. Copper
B. Gold
C. Silver
D. Paper
Out of the following which is not a poor conductor……….?
A. Cast iron
B. Copper
C. Carbon
D. Tungsten
The substances which have a large number of free electrons and offer a low resistance are called….?
A. insulators
B. inductors
C. semi-conductors
D. conductors
Electric pressure is also called……..?
A. resistance
B. power
C. voltage
D. energy