EASY
12th CBSE
IMPORTANT
Earn 100

Define resistivity of a material. State its SI unit.

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 17
What is the order of resistivity of an insulator ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 18
What is the ratio of the resistivity of a typical insulator to that of a metal?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 19
What is the average velocity of free electrons in a metal at room temperature ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 20
Give the order of magnitude of the number density of free electrons in a metal.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 21
Give the order of magnitude of thermal velocity and drift velocity of free electrons in a conductor carrying current at room temperature.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 22
What is the order of resistivity of conductor ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 23
Define temperature coefficient of resistivity.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 24
How does the random motion of free electrons in a conductor get affected when a potential difference is applied across its ends ?