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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 $C$ to $D$ . The charge in the potential energy of the system is $\frac{q_{3}}{4 π ε_{0}} k$ , where $k$ is

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Important Questions on Interaction of Charged Particles, Electric Field and 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 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

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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 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.?

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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 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

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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 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

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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 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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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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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.

Two charges q1 and q2 are placed 30 cm apart, as shown in Fig. 2.126. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The charge in the potential energy of the system is q34πε0k, where k is

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

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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 $C$ to $D$ . The charge in the potential energy of the system is $\frac{q_{3}}{4 π ε_{0}} k$ , where $k$ is