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Q 1/20
Score 0
Phenomena in which a charged body attracts uncharged body is called
45
electrostatic induction
electric current
charge movement
magnetic induction
Q 2/20
Score 0
When a glass rod is rubbed with silk, it
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gives protons to silk
gives electrons to silk
gains protons from silk
gains electrons from silk
20 questions
Q.
Phenomena in which a charged body attracts uncharged body is called
1
45 sec
Q.
When a glass rod is rubbed with silk, it
2
45 sec
Q.
Two similar spheres having +Q and -Q charges are kept at a certain distance. F force acts between the two. If at the middle of two spheres, another similar sphere having +Q charge is kept, then it experiences a force in magnitude and direction as
3
45 sec
Q.
Two charges of equal magnitudes kept at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is
4
45 sec
Q.
The electric field inside a spherical shell of uniform surface charge density is
5
45 sec
Q.
When air in between the two charges is replaced by water of dielectric constant 80, their electrostatic force
6
45 sec
Q.
Electric flux due to a dipole of dipole moment 2 Cm placed inside a spherical surface of radius 2 cm (in Nm2/C):
7
45 sec
Q.
A positively charged sphere A is brought close without touching to a neutral sphere B. Sphere B is touched with a grounded wire. What is the charge on sphere B after the wire is removed?
8
45 sec
Q.
The SI unit of electric flux is
9
45 sec
Q.
The unit of electric dipole moment is
10
45 sec
Q.
What is the magnitude of the electric field at point P, midway between the two like charges of same magnitude ?
11
45 sec
Q.
The force per unit charge is known as
12
45 sec
Q.
Electric field lines provide information about
13
45 sec
Q.
Electric field originates at __________
14
45 sec
Q.
In uniform fields, all points have ________ field strength.
15
45 sec
Q.
A negatively charged rod is brought near a charged electroscope. As a result of doing this, the electroscope leaves move further apart. What is the charge on the electroscope?
16
45 sec
Q.
Four charges are arranged at the corners of a square ABCD, as shown. The force on the charge kept at the centre O is
17
45 sec
Q.
Sphere A is charged positively and sphere B is neutral. The spheres are brought near each other. Which of the following statements is true?
18
45 sec
Q.
A point charge q is placed at geometrical centre a cube. The total flux through the cubical surface due to charge is
19
45 sec
Q.
A point charge q is placed at geometrical centre a cube. The flux through one face the cube due to charge is
