EASY
12th West Bengal Board
IMPORTANT
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Why should electrostatic field be zero inside a conductor?

Important Questions on Interaction of Charged Particles, Electric Field and Potential

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 40
Why do electric field lines not form closed loops?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 41
Two point charges +q each, lying on a straight line are separated by a distance and another point charge -2q is placed midway on the same straight line. Find the net force acting on the charge placed at midpoint.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 42
A charged particle is free to make in an electric field. Will it always move along an electric line of force?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 43
Why it is logical to choose the value of electric potential at infinity to be zero ?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 44
What do you understand by one electron volt ? What kind of physical quantity does it represent-potential difference, charge or energy ? Express electron-volt in ergs. What is the magnitude of the electron-volt in joules ?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 45

Two point charges q1 and q2 are placed at a distance r from each other 

(i) in air, find the force between them.

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 45

Two point charges q1 and q2 are placed at a distance r from each other in air and liquid. In which case the electric force between the charges is greater and why ?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 46
What is permittivity of a medium ? Does it depend on the unit chosen ? If so, how ?