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.
संबंधित प्रश्न
Complete the following :-
(a)
What is (a) highest, and (b)Ω lowest, resistance which can be obtained by combining four resistors having the following resistances?
4 Ω, 8 Ω, 12 Ω, 24 Ω
Three resistors of 6.0 Ω, 2.0 Ω and 4.0 Ω are joined to an ammeter A and a cell of emf 6.0 V as shown in the following figure. Calculate :
- the effective resistance of the circuit.
- the reading of ammeter.
Choose the correct alternative and rewrite the following sentence.
If three resistors 2 ohms, 3 ohms and 4 ohms are connected in series, then the effective resistance in the circuit will be _______ ohms.
Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the 40 W bulb will be ______.
What material is used for making wire to prepare heating coils? Give a reason.
Write an expression for calculating electrical power in terms of current and resistance.
Six equal resistors of 1 ohm each are connected to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves it at D.
Consider the following combinations of resistors:
The combinations having equivalent resistance 1 Q is/are ______.
