Question 1 :
What will be the nature of charge on the metal paper clip of electroscope when a positively charged body is brought in contact with it?

Question 2 :
Each of the two point charges are doubled and their distance is halved. Force of interaction becomes n times, where n is

Question 3 :
Eight dipoles of charges of magnitude $e$ are placed inside a cube. The total electric flux coming out of the cube will be

Question 5 :
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 6 :
A glass rod rubbed with silk is brought near the fur rubbed with an ebonite rod. What will be your observation between them? <br>

Question 7 :
State whether true or false.<br/>Metals as compared to non-metals are generally bad conductors of electricity.<br/>

Question 9 :
A point charge $+q$ is placed at the centre of a cube of side L. The electric flux emerging from the cube is

Question 10 :
State whether true or false.<br/>Pure water is a good conductor of electricity.<br/>

Question 11 :
A particle A having a charge of $2.0 \times 10^{-6}$C and a mass of 100 g is fixed at the bottom of a smooth&#160;inclined plane of inclination $30^{\circ}$. Where should another particle B having same charge and mass, be&#160;placed on the inclined plane so that B may remain in equilibrium?

Question 12 :
When the distance between two charged particles is halved, then the force between them becomes :

Question 13 :
A system consists of a thin charged wire ring of radius r and a very long uniformly charged wire oriented along the axis of the ring, with one of its ends coinciding with the center of the ring. The total charge on the ring is q, and the linear charge density on the straight wire is $\lambda$. The interaction force between the ring and the wire is :

Question 14 :
Using general logic for electric field, the flux of&#160;$\overrightarrow{g}$ through any closed surface is given by :

Question 15 :
Mathematically, electric flux can $\phi$be represented as:<br><br>$\vec E =$ electric field<br>$\hat n=$ surface normal vector<br>$A=$ surface area

Question 17 :
Let $E_1(r), E_2(r)$ and $E_3(r)$ be the respective electric fields at a distance r from a point charge Q, an infinitely long wire with constant linear charge density $\lambda$, and an infinite plane with uniform surface charge density $&#160;\sigma $. lf $E_1(r_0) = E_2(r_0) = E_3(r_0)$ at a given distance $r_0$, then :<br/>

Question 18 :
The electric field at a point $2$cm from an infinite line charge of linear charge density $10^{-7}$ $cm^{-1}$ is?