Question 1 :
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 2 :
An electric dipole placed with its axis in the direction of a uniform electric field experiences:
Question 3 :
The laws of forces that govern the force between two electric charges were discovered by :
Question 4 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Two unlike charges attract each other with a force of 10N. If the distance between them is doubled, the force between them is :</p>
Question 5 :
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 6 :
A charge q is located at the centre of a cube.The electric flux through any face is -
Question 7 :
If the electric force between two unknown charges is attractive, identify which of the following statement must be true?<br/>
Question 8 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Two spheres of equal mass A and B are given $+q$ and $-q$ charge respectively then:</p>
Question 11 :
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 12 :
A negatively charged particle is situated on a straight line joining two other stationary particles each having charge $ +q$. The direction of the motion of the negatively charged particle will depend on:
Question 13 :
Assertion: Sometime, a crackling sound is heard while taking off sweater during winters.
Reason: This is due to static electric charges.
Question 14 :
In an external electric field, the field line of force represent:<br/>
Question 16 :
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 17 :
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 19 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">The electric field at a point at a distance $r$ from an electric dipole is proportional to :</p>
Question 20 :
Two identical metallic spheres A and B of exactly equal masses are given equal positive and negative charge respectively. Then: