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12th West Bengal Board

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Two identical positive charges are fixed on the $Y$ -axis at equal distance from the origin $O$ . A negatively charged particle starts on the $X$ -axis, at a large distance from $O$ , moves along $X$ -axis, passes through $O$ and moves far away from $O$ . Its acceleration $‘ a ’$ is taken as positive along its direction of motion. The best graph, between the particle's acceleration and its $x$ -coordinate is represented by (see Fig. $2.125$ )

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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 66

An electric charge

10^{- 3} μ c

is placed at the origin

(0, 0)

X Y

coordinate system. Two points

A

and

B

are situated at

(\sqrt{2}, \sqrt{2})

and

(2, 0)

respectively. The potential difference between the points

A

and

B

will be

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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 67

Two charges

q_{1}

and

q_{2}

are placed

30 cm

apart, as shown in Fig.

2.126

A

third charge

q_{3}

is moved along the arc of a circle of radius

40 cm

from

C

D

. The charge in the potential energy of the system is

\frac{q_{3}}{4 π ε_{0}} k

, where

k

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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 68

A charge $+ q$ is placed at the origin $O$ of $X - Y$ axes as shown in Fig. $2.127$ . The work done in taking a charge $Q$ from $A$ to $B$ along the straight line $A B$ is

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 69

Figure shows three points

A, B

and

C

in a region of uniform electric field

\vec{E}

. The line

A B

is perpendicular and

B C

is parallel to field lines. Then which of the following holds good.?

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 70

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

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

R_{A}

and a solid metal

B

of radius

R_{B} (< R_{A})

are kept far apart and each is given a charge

+ Q

. Now they are connected by thin wire. Then

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 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

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 1

Potential difference can be expressed in watt per ampere.

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

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