When body is charged, its mass ____.

Important Questions on Electric Charges and Fields

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2018>Q 4

The electric potential due to small electric dipole at a large distance r from the centre of the dipole is proportional to:

HARD

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2018>Q 5

Write down unit and dimension of permittivity of free space.

HARD

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2018>Q 6

A Gaussian surface contains three charges $-q, +2q$ and $-q$. Evaluate net electric flux through the surface.

HARD

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2018>Q 7

Atmosphere is not electrically neutral. Explain why?

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2019>Q 8

Unit of surface charge density is -

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2019>Q 9

The current flowing in a wire is $1 \mathrm{A}$. If the charge of an electron is $1.6\times {10}^{-19} \mathrm{C}$, then the number of electrons flowing through the wire per second is-

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2019>Q 10

If $+q$ charged is placed inside any spherical surface total flux coming out from whole surface will be-

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Electric Charges and Fields>Bihar Board-2019>Q 11

Define electric flux. Write its SI unit.