Question 1 :
Ordinary rubber is an insulator. But the specialrubber tyres of aircrafts are made slightlyconducting. Why is this necessary?
Question 2 :
Two point charges $q$ and $-2q$ are placed some distance $d$ apart. If the electric field at the location of $q$ due to $-2q$ is $E$, than at the location of $-2q$ due to $q$ is ( No external Field is present )
Question 4 :
Two spheres of radii 2 cm and 3 cm have equal surface charge density. Calculate the ratio of their charges.
Question 5 :
In a gold leaf electroscope, its stem is made up of:
Question 6 :
A charge $q_1$ exerts a force of $45N$ on a charge of $q_{2}=10^{-5} C$ located at a point $0.2m$ from $q_{1}$. The magnitude of $q_{1}$ is
Question 9 :
An uncharged insulator can be charged by ______ with another suitable body.<br/><br/>
Question 11 :
If a body acquires electric charge temporarily under the influence of charged body, then the process is called:
Question 12 :
Electric field at a distance r from infinitely long conducting sheet is proportional to :
Question 13 : <p><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">A body has a total charge of <span class="wysiwyg-font-size-medium"><span class="wysiwyg-font-size-medium">$6.4\times  10^{-19}$<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">coulomb. It is :</p>
Question 14 : <p class="wysiwyg-text-align-left">A charge $Q\  \mu C$ is placed at the centre of a cube. The flux coming out from any surface will be :<br/></p>
Question 17 :
Two conducting charged spheres $X$ and $Y$ having unequal charges are connected by the wire. Which of the following is true?
Question 19 :
A charge "Q" and "2Q" are 0.05 meters apart and isolated. The ratio of the electrostatic force on the charge Q to the force on charge 2Q is:
Question 23 :
fast neutrons may most easily be slowed down by which one of the following methods?
Question 24 :
Two point charges $2\ C$ and $-6\ C$ attract each otherwith a force of $12\ N$. A negative charge of $2\ C$ isadded to each of the above charges, now theforce between them is :
Question 25 :
A negative charge is placed at the midpoint between two fixed equal positive charges, separated by a distance $2d$. If the negative charge is given a small displacement $x (x << d)$ perpendicular to the line joining the positive charges, how<br/>the force (F) developed on it will approximately depend on $x$ ?
Question 26 :
The materials that do not allow flow of electron through them are known as :
Question 28 :
A charge q is located at the centre of a cube.The electric flux through any face is -
Question 29 :
State whether the given statement is True or False :Conductors when charged transfer all charges to the entire surface of the conductor. 
Question 30 :
Multiple Correct Answers Type<br>Let [$\epsilon_0$] denote the dimensional formula of the permittivity of vacuum and $[\mu_0]$ that of the permeability of vacuum. If M = mass, L = length, T = time, and I = electric current, then
Question 31 :
Two identical metallic spheres A and B of exactly equal masses are given equal positive and negative charge respectively. Then:
Question 34 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Two spheres of equal mass A and B are given $+q$ and $-q$ charge respectively then:</p>
Question 35 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">A charge of $5 C$ is placed at the centre of a spherical gaussian surface of radius $5 cm$. The electric flux through the surface is $\dfrac{1}{\varepsilon _{0}}$ times of</p>
Question 37 :
The process due to which an uncharged body acquires electric charges when held near a charged body is called :<br/>
Question 38 :
The charge is negative, then the electric lines of forces are 
Question 41 :
A steady curent i is flowing through a conductorof uniform cross-section. Any segment of theconductor has<br>
Question 43 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Two unlike charges attract each other with a force of 10N. If the distance between them is doubled, the force between them is :</p>
Question 44 :
The solid angle subtended by the total surface area of a sphere at the centre is :<br/>
Question 45 :
State whether true or false.<br/>Copper is a poor conductor of electricity as compared to glass.<br/>
Question 46 :
The inward and outward electric flux from a closed surface are respectively $ 8\times 10^{3}$ and $ 4\times 10^{3}$ units.Then the net charge inside the closed surface is
Question 47 :
An electron of mass m. initially at rest takes time $t_1$ to move a distances in a uniform electric field in the same field environment, a proton of mass mp initially at rest takes time $t_2$ to move the same distance (in the opposite direction). Ignoring gravity, the ratio $t_2/t_1$ is<br>
