HARD
12th West Bengal Board
IMPORTANT
Earn 100

A particle A has charge +q and particle B has charge +4q with each of them having the same mass m. When allowed to fall from rest through the same electrical potential difference, the ratio of their speeds VA>VB will become

50% studentsanswered this correctly

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 29
A cube of side b has a charge q at each of its vertices. The electric field due to the charge distribution at the centre of the cube will be -
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 30

In bringing an electron towards another electron, the electrostatic potential energy of the system

HARD
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 31
Identical charges -q are placed at each corner of a cube of side b. Then the electrostatic potential energy of charge +q placed at the centre of the cube will be -
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 32
The dimension of 12ε0E2 (ε0= permittivity of free space, E= electric field) is
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 33
Three charges Q, +q and +q are placed at the vertices of a right angled isosceles triangle as shown in Fig. 2.114. The net electrostatic energy of the configuration is zero; if Q is equal to -

Question Image

HARD
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 34
Two small spheres each having the charge q are suspended by insulating threads of a length l from a hook. The arrangement is taken in space, where there is no gravitational effect. Then the angle between the two suspensions and the tension in each will be 
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 35
Point charge q moves from point P to point S along the path PQRS (as shown in figure, Fig. 2.115) in a uniform electric field E pointing co-parallel to the positive direction of X -axis. The coordinates of the points P, Q, R and S are (a,b,0), (2a,0,0), (a,-b,0) and (0,0,0) respectively. The work done by the field in the above process is given by the expression

Question Image

HARD
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 36
A positively charged thin metal ring of radius R is fixed in the xy place with its centre at the origin O. A negatively charged particle P is released from rest at the point 0,0,z0 where z0>0. Then the motion of p is