Advertisements
Advertisements
Question
How does the resistivity of a semiconductor depend on temperature?
Advertisements
Solution
The resistivity of a semiconductor decreases with an increase in temperature.
APPEARS IN
RELATED QUESTIONS
Find the equivalent resistance between points A and B
(i) Two sets A and B, of three bulbs each, are glowing in two separate rooms. When one of the bulbs in set A is fused, the other two bulbs also cease to glow. But in set B, when one bulb fuses, the other two bulbs continue to glow. Explain why this phenomenon occurs.
(ii) Why do we prefer arrangements of Set B for house circuiting?
A p.d. of 4 V is applied to two resistors of 6 Ω and 2 Ω connected in series. Calculate:
(a) the combined resistance
(b) the current flowing
(c) the p.d. across the 6 Ω resistor
In series combination of resistances ______.
A graph is plotted taking p.d. along y-axis and electric current along x-axis. Name the physical quantity that represents the slope of this graph (Fig.).
The voltage applied to a given rheostat is made four times its initial value. By what factor will be resistance of the rheostat change?
The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.
Consider the following combinations of resistors:
The combinations having equivalent resistance 1 Q is/are ______.
