Question 2 :
A plane area of $$100\ {cm}^{2}$$ is placed in uniform electric field of $$100\ N/C$$ such that the angle between area vector and electric field is $$60^o$$. The electric flux over the surface is

Question 3 :
When a negative charge is taken at a height from earth's surface, then its potential energy:

Question 5 :
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 6 :
State whether true or false :Electric flux through a closed surface is equal to total flux due to all the charges enclosed within that surface only.

Question 7 :
A point charge $$+q$$ is placed at the centre of a cube of side L. The electric flux emerging from the cube is

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

Question 9 :
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 10 :
The force between two point charges placed in a material medium of dielectric constant $$\varepsilon_r$$ is $$F$$. If the material is removed, then the force between them becomes:

Question 11 :
Two point charges $$+3\mu C$$ and $$+8\mu C$$ repel each other with a force of $$40 N$$. If a charge of $$-5\mu C$$ is added to each of them, the force between them will become:

Question 12 :
A test charge q is located 1 meter from a much larger and stationary charge Q. While at this location, the test charge q, experiences a force of F from the stationary charge Q. The test charge is then moved to a new location 2 meters from Q. What force will the test charge q experience from the stationary charge Q at the new location?

Question 13 :
Electrical charge can be transferred from a charged object to another through

Question 14 :
A body is brought near a negatively charged gold&#160;leaf electroscope. If the divergence of leaves&#160;remains unchanged, state the&#160;kind of charge on body in this case.

Question 15 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Fill in the blank.</p><p class="wysiwyg-text-align-left">$$1$$ Coulomb of charge contains_______number of electrons.</p>

Question 16 :
State whether true or false.<br/>Metals as compared to non-metals are generally bad conductors of electricity.<br/>

Question 17 :
State whether true or false.<br/>Pure water is a good conductor of electricity.<br/>

Question 18 :
A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium if q is equal to :<br/>

Question 20 :
Three charges $$Q , 2 Q , 8 Q$$ are to be placed along a line whose length is $$R .$$ The positions where these charges should be placed respectively such that the potential energy of the system is minimum are

Question 21 :
Mid way between the two equal and similar charges, we placed the third equal and similar charge. Which of the following statements are correct, concerned to the equilibrium along the line joining the charges?<br/>

Question 22 :
State whether the given statement is True or False :Electric forces can only act between charged objects - either like-charged or oppositely-charged.

Question 23 :
A total charge of&#160;$$\displaystyle 5\mu c$$ is distributed uniformally on the surface of the thin walled semi spherical cup. If the electric field strength at the center of the semi sphere is&#160;$$\displaystyle 9\times { 10 }^{ 8 }N{ C }^{ -1 }$$, the radius of the cup is:<br/>$$\displaystyle \left( \frac { 1 }{ 4\pi { \in &#160;}_{ 0 } } =9\times { 10 }^{ 9 }N{ m }^{ 2 }{ C }^{ -2 } \right)&#160;$$<br/>

Question 24 :
A charged body has an electric flux F associated with it . Now if the body is place inside a conducting shell then the electric flux outside the shell is:

Question 25 :
The electrostatic force between two point charges $$q_{1}$$ and $$q_{2}$$ at separation 'r' is given by $$F = \dfrac {Kq_{1}q_{2}}{r^{2}}$$. The constant K:

Question 26 :
A particle of charge +2q exerts a force F on a particle of charge -q . What is the force exerted by the particle of charge -q on the particle of charge +2q?

Question 28 :
The force between two charges $$8 cm$$ is apart is $$6 N$$ . If each charge is moved towards the other by $$1 cm$$ , then the force between them will become

Question 29 :
$$S_1$$ : 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 30 :
<p>A spherical charged conductor has a surface charge density $$\sigma $$. The electric field on its surface is E and electric potential of the conductor is V. Now the radius of the sphere is halved keeping the charge to be constant. The new values of electric field and potential would be&#160;</p>

Question 31 :
Charges $$Q_1$$ and $$Q_2$$ are placed inside and outside respectively of an uncharged conducting shell. Their seperation is r.

Question 32 :
An electric charge $$q$$is placed at the centre of a cube of side $$a$$ The electric flux throughone of its faces is

Question 33 :
A particle of mass $$m$$ and charge $$q$$ at rest is released in a uniform electric field between parallel planes of charge $$+q$$ and $$-q$$ respectively. The particle accelerates towards the other place a distance $$'d'$$ away. The speed at which it strikes the opposite plane is:

Question 34 :
Two parallel large thin metal sheets have equalsurface charge densities$$\displaystyle \left( \sigma =26.4\times { 10 }^{ -12 }{ c }/{ { m }^{ 2 } } \right)$$ of opposite signs.<br>The electric field between these sheets is:<br><br>

Question 35 :
The electric field in a region is $$E = \displaystyle \frac{5\times 10^3 x}{2}\hat{i} \ NC^{-1} cm^{-1} $$. The charge contained inside a cubical volume bounded by the surfaces $$x = 0, x = 1, y = 0, y = 1, z = 0, z = 1$$ is (where x, y, z are in cm) :