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12th West Bengal Board
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Two thin wire rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two rings +q and -q. The potential difference between the centres of the two rings is

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

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 71
A spherical metal shell A of radius RA and a solid metal B of radius RB<RA are kept far apart and each is given a charge +Q. Now they are connected by thin wire. Then
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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 72
Two positive charges of magnitude q are placed at the ends of a side (side 1) of a square of side a. Two negative charges of the same magnitude are kept at the other corners. Starting from rest, if a charge Q moves from the middle of side 1 to the center of the square, its kinetic energy at the center of the square is
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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 1
Potential difference can be expressed in watt per ampere.
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 2
The work needed to move a charge from one point to another depends on the path it follows between the points.
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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 3
Two identical metallic spheres of exactly equal masses are taken. One of them is given a positive charge Q coulomb and the other is equal negative charge. After charging their masses are different.
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 4
Electrons move away from a region of higher potential to a region of lower potential.
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 2 - Interaction of Charged Particles, Electric Field and Potential>EXERCISE 2>Q 5
A positive charge q is placed at the centre of a circle as shown in Fig. 2.129. The work done in taking a unit +ve charge from A to C is more than the work done in taking it from A to B.

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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 6
The direction of electrostatic field intensity at a point on the surface of a charged conductor is along the tangent drawn on the surface at that point.