Question 1 :
the number of electric field lines emerged out of 1 C charge is
Question 2 :
You are provided with a negatively charged gold leaf electroscope. State and explain what happens when an ebonite rod rubbed with fur is brought near the disc of electroscope.
Question 3 :
Two electric dipoles of dipole moment $2 \space cm$ and $4 \space cm$ respectively are kept inside a cube of side $'a' \space m$. Total electric flux linked with the cube is (in SI units)
Question 4 :
Assertion: A charge $q$ is placed on a height $h / 4$ above the centre of a square of side $b$. The flux associated with the square is independent of side length.
Reason: Gauss's law is independent of size of the Gaussian surface.
Question 9 :
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 10 :
Which of the following devicesis used to detect the presences of a charge on a body?<br>
Question 11 :
Complete the following statements with an appropriate word /term be filled in the blank space(s).<br/>The force of attraction or repulsion between two charges is given by ......................<br/>
Question 12 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">If $10$ million electrons are removed from a neutral body, then the charge on the body is :</p>
Question 13 :
If $\oint _{ s }^{  }{ \overrightarrow { E } .\overrightarrow { d } s } =0$ over surface, then
Question 14 :
<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 15 :
A steady curent i is flowing through a conductorof uniform cross-section. Any segment of theconductor has<br>
Question 16 :
A point charge ${q_1} =  - 5.8\mu C$ is held stationary at the origin . A second point charge ${q_2} =  + 4.3\mu C$ moves from the point $(0.26m,0,0)$ to $(0.38m,0,0)$.How much work is done by the electric force on {q_2}.
Question 18 :
If the number of electric lines of force emerging out of a closed surface is 1000, then the charge enclosed by the surface is
Question 19 :
The ratio of electric force between two electrons to two protons separated by the same distance in air is
Question 20 :
If $10^{20}$ <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">electrons are removed from a conductor. The nature and magnitude of the charge developed on it is :