EASY
12th CBSE
IMPORTANT
Earn 100

Sketch a graph showing variation of resistivity of carbon with temperature.
Or
Show on a graph, the variation of resistivity with temperature for a typical semiconductor Si.

Important Questions on Current Electricity

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 32
Name two materials whose resistivity decreases with the rise of temperature.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 33
How does the conductance of a semi-conducting material change with rise in temperature ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 34
Of copper and nichrome, which one has possibly larger value of temperature coefficient of resistance ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 35
How does resistivity of alloy manganin change with temperature ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 36
How does the resistance of an insulator change with temperature ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 37
Name two parameters which determine the resistivity of a material.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 38
How is the conductivity of an electrolyte affected by the increase of temperature ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 39
If potential difference V applied across a conductor is increased to 2V, how will the drift velocity of the electrons change ?