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12th West Bengal Board

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Three positive charges of equal value $q$ are placed at the vertices of an equilateral triangle. The resulting lines of force should be sketched as in Fig. $2.116$ .

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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 44

A metallic shell has a point charge

q

kept inside its cavity. Which one of the following diagram, Fig.

2.117

correctly represents the electric lines 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 45

A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path (s) shown in figure, Fig.

2.118

, as

Question Image

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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 46

Which of the following figures, Fig.

2.119

, cannot possibly represent electrostatic field lines?

Question Image

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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 47

A hollow metal sphere of radius

5 cm

is charged, such that the potential on its surface is

10 V

. The potential at the centre of the sphere 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 48

A charged wire is bent in the form of a semicircular arc of radius

a

. If charge per unit length is

λ {cm}^{- 1}

, the electric field at the centre

O

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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 49

Two equal point charges are fixed at

x = + a

and

x = - a

on the

X

-axis. Another point charge

Q

is placed at the origin. The change in electric potential energy of

Q

when it is displaced by small distance

x

along the

X

-axis, is approximately proportional to

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 50

The electric potential

V

at any point

x, y, z

(all the coordinates are in metres) in space is given by

V = 4 x^{2}

. The electric field at the point

(1 m, 0, 2 m)

{voltmetre}^{- 1}

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 51

Two small spheres of masses

M_{1}

and

M_{2}

are suspended by weightless insulating threads of lengths

L_{1}

and

L_{2} .

The spheres carry charges

Q_{1}

and

Q_{2}

respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of

θ_{1}

and

θ_{2}

as shown in Fig.

2.120

. Which one of the following conditions is essential, if

θ_{1} = θ_{2}

Question Image

Three positive charges of equal value q are placed at the vertices of an equilateral triangle. The resulting lines of force should be sketched as in Fig. 2.116.

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

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Three positive charges of equal value $q$ are placed at the vertices of an equilateral triangle. The resulting lines of force should be sketched as in Fig. $2.116$ .