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Q 1/50
Score 0
1. The attraction is the real proof of an object being charged.
30
FALSE
TRUE
None of the above
can not be seen
Q 2/50
Score 0
2. If an object is positively charged, theoretically the mass of the object ______
30
Remains the same
Decreases slightly by a factor of 9.11*10^-31 kg
May increase or decrease
Increases slightly by a factor of 9.11*10^-31 kg
50 questions
Q.
1. The attraction is the real proof of an object being charged.
1
30 sec
Q.
2. If an object is positively charged, theoretically the mass of the object ______
2
30 sec
Q.
3. Why is gold used in the Gold-leaf electroscope?
3
30 sec
Q.
4. What happens to the plates of the apparatus if we measure alternating charge using a Gold-leaf oscilloscope?
4
30 sec
Q.
5.Gold-leaf electroscope can be used _______
5
30 sec
Q.
6. 1 Coulomb = ________ Electro Static Unit.
6
30 sec
Q.
7. Number of electrons in 1 Coulomb charge is _________
7
30 sec
Q.
8.Two equally charged spheres attract each other. Now if they touch each other then they will _____
8
30 sec
Q.
9. Which among the following cannot be the charge of a charged body?
9
30 sec
Q.
10. Current carrier in conductors is ____
10
30 sec
Q.
11. Which group among the following is insulator?
11
30 sec
Q.
12. The band gap between the valence band and conduction band is the measure of ______
12
30 sec
Q.
A static electricity experiment can be performed properly in any season. The statement is ______
13
30 sec
Q.
The rubber used in the wheels of aero-plane is _________
14
30 sec
Q.
Insulation breakdown may occur at _______
15
30 sec
Q.
Superconductors have __________
16
30 sec
Q.
If a positively charged sphere is taken close to another uncharged sphere then which of the following statements is true?
17
30 sec
Q.
Induction occurs due to ______
18
30 sec
Q.
A charge is being induced to a sphere with the help of another charged sphere. The extent of induction increase if ____________
19
30 sec
Q.
During induction, earthing of the body is done for faster induction.
20
30 sec
Q.
A solid sphere will carry more charge than a hollow sphere of the same radius.
21
30 sec
Q.
+q, +2q, +3q, +4q, ……(up to +20q) charges are situated at coordinates (0,0) , (1,0) ,(2,0) , ….. (Up to 20). What is the total charge stored in the system?
22
30 sec
Q.
A charged conductor has its charge only on its outer surface. This statement is true for which of the following?
23
30 sec
Q.
What is the unit of surface charge density in the SI unit?
24
30 sec
Q.
Which one is not the property of charge?
25
30 sec
Q.
What is the unit of electric flux?
26
30 sec
Q.
Electric flux will be maximum if the angle between the field lines and area vector is ______
27
30 sec
Q.
If a charge is placed outside a closed surface, flux due to that charge inside the surface will be ________
28
30 sec
Q.
Two separate charges q and 10q are placed inside two different spheres. In which case, the electric flux will be greater?
29
30 sec
Q.
Which of the following law explains the relation between the charge inside a surface and electric flux?
30
30 sec
Q.
Flux coming out from a balloon of radius 10 cm is 1.0*10^3 N.m^2.C^-1. If the radius of the balloon is doubled, the flux coming out from the balloon will be _______
31
30 sec
Q.
If the force acting on a point charge kept on the axis of an electric dipole is F, what will be the amount of force if the distance of the point charge is doubled from the dipole?
32
30 sec
Q.
If electric field intensity at a certain distance from a dipole on its axis is E1 and at the same distance but on the perpendicular bisector of the dipole is E2, then __________
33
30 sec
Q.
Dipole moment depends on _______
34
30 sec
Q.
The electric field at a point on the perpendicular bisector of a dipole is directed ______
35
30 sec
Q.
An electric dipole is placed inside a cube. What will be the nature of electric flux from the cube surface?
36
30 sec
Q.
A dipole, having dipole moment p⃗ is placed in an electric field E⃗ . What will be the torque acting on the dipole?
37
30 sec
Q.
If an electric dipole is placed in a uniform electric field ______ will act on the dipole.
38
30 sec
Q.
If an electric dipole is placed in a non-uniform electric field ______ will act on the dipole.
39
30 sec
Q.
An electric dipole will be in stable equilibrium if the angle between the axis of the dipole and the electric field is ________
40
30 sec
Q.
If a non-polar substance is placed in an electric field, what will happen?
41
30 sec
Q.
An electric field E is present perpendicular to a square plate of side length L. What is the flux passing through the plate?
42
30 sec
Q.
A non-conducting sphere has uniform charge density in it. The electric field at a point inside the sphere will be
43
30 sec
Q.
Gauss’s Law cannot be applied in ________
44
30 sec
Q.
Work done to bring a unit positive charge from infinity to a point in an electric field is known as _______
45
30 sec
Q.
Electric potential due to a point charge q at a distance r from the point is _______ (in the air).
46
30 sec
Q.
What is the electric potential at the perpendicular bisector of an electric dipole?
47
30 sec
Q.
Two equal and opposite charges Q1 = 2 C and Q2 = -2C are placed at a distance of 6m from each other. What is the potential at the midpoint between the two charges?
48
30 sec
Q.
What is the nature of equipotential surfaces in case of a positive point charge?
49
30 sec
Q.
What will be the nature of equipotential surfaces due to a point charge, situated at infinity?
