Question 1 :
In an external electric field, the field line of force represent:<br/>
Question 4 :
The solid angle subtended by the total surface area of a sphere at the centre is :<br/>
Question 5 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">Another unit for the quantity having the unit $\dfrac{C^2 }{Nm^2}$ is:
Question 7 :
Calculate the magnitude of the force between two electrons which are separated by a distance of $10^{-10}m$. If the magnitude of the charge is $10^{-19}C$ and Coulomb constant is $10^{10}N\;m^{2}/C^{2}$.
Question 8 :
An electron is placed at the centre of a conducting sphere of radius $0.2$ metre having a uniform charge $5\times 10^{-2}$ coulomb. The force on the electron is :
Question 9 :
The Gaussian surface for calculating the electric field due to a charge distribution is
Question 11 :
<p><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">A body has a charge of <font size="3">$9.6 \times 10^{-20}$</font><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">coulomb. It is :</p>
Question 12 :
The specific charge of a proton is $\displaystyle 9.6\times { 10 }^{ 7 }C/kg$. The specific charge of an alpha particle will be:
Question 13 :
Two identical metallic spheres A and B of exactly equal masses are given equal positive and negative charge respectively. Then:
Question 14 :
Uniform electric field of intensity 5 volt/m acts parallel to x axis. A charge of 2C is moved from to A (1,1), to B (2,1) and finally to D(3,C) in this field.Work done in this process is :
Question 18 :
A charge is placed at the centre of a cube. The electric flux through one face of the cube is :<br/>
Question 19 :
<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 20 :
Electric field at a distance r from infinitely long conducting sheet is proportional to :