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12th West Bengal Board

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A uniform electric field pointing in positive $X$ direction exists in a region. Let $A$ be the origin, $B$ be the point on the $X$ -axis at $x = + 1 cm$ and $C$ be the point on the $Y$ -axis at $y = + 1 cm$ . Then the potentials at $A, B$ and $C$ satisfy-

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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 39

Potential at any point inside a charged hollow sphere -

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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 40

A charge

+ q

is fixed at each of the point

x = x_{0}, x = 3 x_{0}, x = 5 x_{0} \dots \dots \dots

\propto

on the

X

-axis and a charge

- q

is fixed at each of the points of the points

x = 2 x_{0}, x = 4 x_{0}, x = 6 x_{0} \dots \dots \dots .

\propto

, Here

x_{0}

is a positive constant. Take the electric potential at a point due to a charge

Q

at a distance

r

from it to be

\frac{1}{4 π ε_{0}} \frac{Q}{r} .

Then, the potential at the origin due to the above system of the charges 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 41

Two equal negative charges

- q

are fixed at the points

(0, a)

and

(0, - a)

on the

Y

-axis. A positive charge

Q

is released from rest at the point

(2 a, 0)

on the

X

-axis. The charge

Q

will-

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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 42

A hollow sphere of charge does not produce an electric field at any -

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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 43

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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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 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?

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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 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

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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 46

Which of the following figures, Fig.

2.119

, cannot possibly represent electrostatic field lines?

Question Image

A uniform electric field pointing in positive X direction exists in a region. Let A be the origin, B be the point on the X-axis at x=+1 cm and C be the point on the Y-axis at y=+1 cm. Then the potentials at A, B and C satisfy-

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

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A uniform electric field pointing in positive $X$ direction exists in a region. Let $A$ be the origin, $B$ be the point on the $X$ -axis at $x = + 1 cm$ and $C$ be the point on the $Y$ -axis at $y = + 1 cm$ . Then the potentials at $A, B$ and $C$ satisfy-