A charge of 5 $μ c$ is placed at the centre of a circle of radius $10 c m$ as shown in the figure, Fig. $2.99$ . Calculate the work done in moving a charge of $2$ $μ c$ from a point $A$ to $B$ on the circumference of the circle. ISC ' $05$

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 21

What is the locus of a point at which the electric field

\vec{E}

due to an electric dipole is parallel to the line joining the charges

+ q

and

- q

forming the dipole ?

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 22

If the distance between two equal point-charges is halved and their individual charges are doubled, what would happen to the force between them?

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 23

Three charges $q_{1} = 3 μ c, q_{2} = 4 μ c$ and $q_{3} = - 7 μ c$ are placed on the circumference of a circle of radius $1.0 m$ as shown in figure, Fig. $2.100 .$ What is the value of charge $q_{4}$ placed on the same circle if the potential at the centre $V_{c} = 0 ?$