NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 14

MEDIUM

12th ICSE

IMPORTANT

Earn 100

The potentials of two points $A$ and $B$ are respectively $+ V$ and $- V$ volt. If the distance between them be $r$ metre, then calculate average electric field between $A$ and $B$ .

Important Questions on Electric Potential

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 14

The potentials of two points

A

and

B

are respectively

+ V

and

- V

volt. If the distance between them be

r

metre, then calculate change in potential energy in moving

q

coulomb of charge from point

A

to

B

.

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 15

Electric lines of force are always normal to an equipotential surface in an electric field

\vec{E}

. Why?

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 16

Why is the electric field at the outer surface of a hollow charged conductor is normal to the surface?

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 17

An electron starts from rest in an electric field and acquires a speed

ν

in reaching a point. If

V

be the PD between the starting point and the reaching point, then prove that

ν α \sqrt{V}

.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 18

An

α -

Particle and a proton are accelerated through the same potential difference. Find the ratio of velocities and linear momenta acquired by them.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 19

Three point charges

- q, + q

and

- q

are placed along a straight line at equal distances (say

r

metre). Calculate the electric potential energy of this system of charges, when

+ q

charge is in the middle.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 19

Three point charges

- q, + q

and

- q

are placed along a straight line at equal distances (say

r

metre). Calculate the electric potential energy of this system of charges, when this charge is at one end.

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 20

The charges

- q

and

+ q

of a dipole are located at points

(0, 0, - a)

) and

(0, 0, a)

. How much work is done in moving a small test charge from the point

(5, 0, 0)

to

(- 7, 0, 0)

along the

X -

axis? Does the answer change if the path of the test charge is not along

X -

axis?