Basic Properties of Electric Charge

A conductor is containing a charge of$-5 \mathrm{\mu C}.$ The numbers of electrons contained by the conductor are

 A body is having $-2 \mathrm{C}$ charge. If ${10}^6$ electrons move out of the body every second, then time after which the body becomes neutral will be approximately
 

What are electrons?

Spheres A and B having equal masses are given charges$+ q$  and $- q$ respectively. If after charging their respective masses are respectively 
$m_A$ and $m_{\mathit{B}}$, then relation of $m_A$ and $m_B$ will be _____.

Find the charge on an iron particle of mass $2.24 \mathrm{mg}$ if $0.02 \%$ of electrons are removed from it.

The charge present in a doubly ionized helium atom is

A charge $\frac{2Q}{3}$ is to be divided on two objects. The value of charge on each object, such that force between the object can be maximum, would be

How many electrons must be removed from a body so that it may have the charge of

i. $1 \mathrm{million} \mathrm{coulombs}$

ii. $1 \mathrm{micro} \mathrm{coulomb}$

How many electrons may be removed from a body so that it may have a charge (a) $+1 \mathrm{milli} \mathrm{coulomb}$, (b) $+1 \mathrm{micro} \mathrm{coulomb}$.

When a scale is rubbed with hair two electrons are transferred from scale to hair. Calculate the charge on hair or scale after transfer .

An object has an excess charge of $-1.92\times {10}^{-7} \mathrm{C}$. How many excess electrons does it have?

Two metallic spheres $A$ and $B$ of equal size each having charge $+12 \mathrm{\mu C}$ and a third sphere $C$ of different size carries charge of $-11 \mathrm{\mu C}$. What will be the charge of sphere $C$, if each of sphere $A$ and $B$ carries charge of $+3 \mathrm{\mu C}$ after making contact between three spheres?

An electron at rest has a charge of $1.6\times {10}^{-19} \mathrm{C}$. It starts moving with a velocity $v=\frac{c}{2}$, where $c$ is the speed of light, then the new charge on it is-

The mass of neutron is _____ $\mathrm{amu}$.

What do you mean by additivity of electric charge?

What are the fundamental particles of matter?

Consider a proton present in a region of space. A uniform electric field $5 {\mathrm{NC}}^{-1}$ is applied in the region. Find the acceleration produced in the particle.

Calculate the number of electrons to be transferred to neutralise $+8 \mathrm{C}$ charge present on a metallic sphere kept on an insulating stand?

What is invariance of electric charge? Explain in brief.

Which are the elementary charged particles of which matter is made of?