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12th West Bengal Board
IMPORTANT
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The electric potential at the surface of an atomic nucleus (Z=50) Of radius 9.0×10-15 m is

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

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 15
An electric dipole of moment p is placed in the position of stable equilibrium in a uniform electric field of intensity E. The torque required to rotate, when the dipole makes an angle θ with the initial position is -
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 16
If a charge is moved against the coulomb force of an electric field -
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 17
Torque acting on electric dipole of dipole moment p→ placed in uniform electric field E is -
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 18
The work done in carrying a charge Q once round the circle of radius r with charge Q at the centre of the circle is -
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 19

In the electric field of a point charge q, a certain charge is carried from A to B, C, D, E in Fig. 2.111. Then the work done

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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 20
A dipole of electric dipole moment p→ is placed in a uniform electric field of strength E→. If θ is angle between p→ and E→, then potential energy of the dipole becomes largest, when θ is -
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 21
In the electric field of a point charge q shown in the figure given below, a charge is carried from A to B and from A to C. Compare the work done - 

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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 22
Three charges 4q, Q and q are placed in a straight line of 0, l2 and l respectively. What should be Q at length l at points in order to make the net force on q to be zero ?