Advertisements
Advertisements
प्रश्न
How does the resistivity of a semiconductor depend on temperature?
Advertisements
उत्तर
The resistivity of a semiconductor decreases with an increase in temperature.
APPEARS IN
संबंधित प्रश्न
Find the equivalent resistance between A and B

An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
(a) 0.92 A
(b) 2.9 A
(c) 9.2 A
(d) 92 A
When a 4 Ω resistor is connected across the terminals of a 12 V battery, the number of coulombs passing through the resistor per second is:
(a) 0.3
(b) 3
(c) 4
(d) 12
How does the resistance of a pure metal change if its temperature decreases?
Give the law of combination of resistances in series.
You are supplied with a number of 100 Ω resistors. How could you combine some of these resistors to make a 250 Ω resistor?
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
What should be the length of a nickel wire of area of cross-section 3 mm2 used for making a rheostat of 750 ohm? (ρ of nickle = 0.069 Ohm mm2/m)
