Question 1 :
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 2 :
The materials that do not allow flow of electron through them are known as :

Question 3 :
The field due to a charge at a distance $$x$$ from it is $$E$$. When the distance is doubled, the intensity of the field would be:

Question 4 :
State True or False :Human body is a good conductor of electricity.

Question 5 :
Two positive point charges $$q_1$$ and $$q_2$$ are kept at the distance d. If the distance between them is triple. Calculate by which factor new electrostatic force is decreased.<br/>

Question 6 :
<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 8 :
State whether true or false.<br/>Copper is a poor conductor of electricity as compared to glass.<br/>

Question 9 :
The sum total of the number of electrons in a system may change. The statement is :<br/>

Question 10 :
On doubling the charge on one particle while leaving all other factors the same will:<br/>

Question 11 :
Two charges are placed at certain distance apart. A metallic sheet is placed between them. What will happen to the force between the charges?

Question 12 :
The solid angle subtended by the total surface area of a sphere at the centre is :<br/>

Question 13 :
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 $$x (x &lt;&lt; d)$$ perpendicular to the line joining the positive charges, how<br/>the force (F) developed on it will approximately depend on $$x$$ ?

Question 14 :
A gold leaf electroscope is given a positive charge so that its leaves diverge. How is the divergence of leaves affected, when a positively charged rod is brought near its disc?

Question 15 :
The electric potential is $$V=x^2-2x$$. What us the electric field strength at $$x=1?$$

Question 16 :
Which one of the following is bad conductor of electricity ?

Question 17 :
$$S_1$$ : A body having non-uniform velocity will have zero acceleration.<br/>$$S_2$$: A charge particle is free to move in an electric field. It will travel along a line of force, if it has some initial&#160;velocity in the direction of a non-zero&#160;acute angle with the line of force.<br/>$$S_3$$: Stationary waves are called 'stationary' because in them everything remains at rest. Find the correct alternative from the following($$F$$: False and $$T$$: True):<br/>

Question 18 :
A small sphere of mass $$m$$ and having charge $$q$$ is suspended by a silk thread of length $$l$$ in a uniform horizontal electric filed. If it stands at a distance x from the vertical line from point of suspension, then magnitude of electric field is :

Question 19 :
Two identically charged metal spheres A and B experience a force of $$2 \times 10^{-5}$$ Newton of repulsive nature. Another, similar uncharged metal spheres C is brought near A and after contact with A it is separated and now placed midway between A and B. The total force on this new spheres C in Newton is:

Question 20 :
Electric field intensity at points in between and outside two thin separated parallel sheets of infinite dimension with like charges of same surface charge density ($$\sigma$$) are ______ and ______ respectively

Question 21 :
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will :<br/>

Question 22 :
A point charge of value $$10^{-7}\ C$$ is situated at the centre of cube of $$1\ m$$ side. The electric flux through its total surface area is:

Question 24 :
For the given situation irrespective of the magnitude of charge and their separation it is found that total energy of the system (i. e. electric potential energy and their K.E.) is related to K.E. by the equation total energy = -kinetic energy (k)<br>Which of the following gives the correct value of potential energy of the system?