Name a substance whose resistance decrea...

Name a substance whose resistance decreases with temperature.

Text Solution

Verified by Experts

Germanium (a semi-conductor)

Topper's Solved these Questions

ELECTRICITY
KUMAR PRAKASHAN|Exercise VALUE BASED QUESTIN WITH ANSWERS|15 Videos
ELECTRICITY
KUMAR PRAKASHAN|Exercise PRACTICAL SKILL BASED QUESTION WITH ANSWERS|20 Videos
ELECTRICITY
KUMAR PRAKASHAN|Exercise OBJECTIVE QUESTIONS AND ANSWERS (Choose the correct option from those given below each question: )|55 Videos
MAGNETIC EFFECTS OF ELECTRIC CURRENT
KUMAR PRAKASHAN|Exercise VALUE BASED QUESTIONS WITH ANSWERS|15 Videos

Similar Questions

Explore conceptually related problems

Name a substance whose resistance almost remains unchanged With a change in temperature.

Give name of substance that contract with increase in temperature.

Consider the MB shown in the diagram, let the resistance X have temperature coefficient alpha_(1) and the resistance from the RB have the temperature coefficient alpha_(2) . Let the reading of the meter scale be 10 cm from the LHS. if the temperature of the two resistance increase by small temperature DeltaT then what is the shift in the position of the null point ? Neglect all the other changes in the bridge due to temperature rise.

Assertion : Surface tension decreases with increase in temperature . Reason : On increasing temperature kinetic energy increases and intermolecular forces decreases .

A solid which is transparent to visible light an whose conductivity increases with temperature is formed by ……..

Why the density is changed of solid substances by increase in temperature ?

Two equal resistance at 0^(@)C with temperature coefficient of resistance alpha_(1) and alpha_(2) joined in series act as a single resistance in a circuit the temperature coefficient of their single resistance will be

Resistance of conductor increases with increase in temperature because ....

Give one example for solid, liquid and gaseous for expansion with increase in temperature and compression with decreases in temperature.

KUMAR PRAKASHAN-ELECTRICITY-OBJECTIVE QUESTIONS AND ANSWERS (Answer the following questions as directed (Miscellaneous):)

How does the potential difference divide itself in a series combinatio...
Text Solution
|
How is heat produced in a conductor by an electric current?
Text Solution
|
If a number of bulbs of different wattages are joined in parallel With...
Text Solution
|
Which bulb will glow With maximum brightness in case bulbs of differen...
Text Solution
|
What can you say about the resistance of an ammeter?
Text Solution
|
What can you say about the resistance of a voltmeter?
Text Solution
|
How does the resistance of a metallic Wire depend on its temperature?
Text Solution
|
Two wires have the same length, same radius but one of them is made of...
Text Solution
|
Name a substance whose resistance decreases with temperature.
Text Solution
|
Name a substance whose resistance almost remains unchanged With a chan...
Text Solution
|
Distinguish between the kilowatt and the kilowatt hour.
Text Solution
|
Name two characteristics of a heater coil.
Text Solution
|
The power-voltage rating of an electric appliance is 100 W- 250 V What...
Text Solution
|
Why is much less heat generated in long electric cables than in the fi...
Text Solution
|
How much energy is consumed by 2 kW AC when used for 2 hour?
Text Solution
|
A wire of resistivity p is pulled to double its length. What will be i...
Text Solution
|
How does the resistance of an ohmic conductor depend on the applied v...
Text Solution
|
What causes the potential difference between the two terminals of a ce...
Text Solution
|
Name and define the smallest commercial unit of electricity.
Text Solution
|
If, the current I, through a resistor is increased by 100.% (assume th...
Text Solution
|