Physics MCQ on ElectrostaticsThe following section consists of Physics Multiple Choice questions on Electrostatics For competitions and exams. Select the correct option to test your skills Electrostatics.
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Electrostatics
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Question 1 of 20
1. Question
The change in potential energy of a unit charge between two points in an electrical field is called?
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Question 2 of 20
2. Question
A dielectric K = 2 is inserted between the plates of a 20μF capacitor. It capacitance will become?
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Question 3 of 20
3. Question
The electric flux is positive when the angle between E and LA is? (a) (b) (c) (d) 0 <900
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Question 4 of 20
4. Question
If 4μF and 2μF capacitors are connected in series, the equivalent capacitor is?
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Question 5 of 20
5. Question
In case of a parallel combination of capacitors, the net capacity is greater than?
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Question 6 of 20
6. Question
The presence of a dielectric between the plates of a capacitor results in?
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Question 7 of 20
7. Question
One Joule per coulomb is called?
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Question 8 of 20
8. Question
Energy can be expressed in terms of?
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Question 9 of 20
9. Question
If two capacitors of lOμF each are connected in parallel, their equivalent capacitance will be?
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Question 10 of 20
10. Question
Total potential difference across the combination of three ceHs becomes maximum when?
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Question 11 of 20
11. Question
In case the charges are similar the force is of?
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Question 12 of 20
12. Question
The force per unit charge is known as?
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Question 13 of 20
13. Question
Introducing a. non-conducting medium between two charges, the force between them?
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Question 14 of 20
14. Question
The electric flux through a surface will be minimum, when the angle between E and A is?
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Question 15 of 20
15. Question
Which of the following cannot be the units of electric intensity?
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Question 16 of 20
16. Question
The electric flux through a closed surface depends on the?
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Question 17 of 20
17. Question
When three capacitors are joined in series, the total capacitance is?
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Question 18 of 20
18. Question
The unit of electric intensity is?
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Question 19 of 20
19. Question
The rate of change of potential with respect to the distance is called as?
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Question 20 of 20
20. Question
The unit of Capacitance is?
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Electrostatics
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Question 1 of 20
1. Question
Electric flux through a surface is maximum when the angle between E and A is?
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Question 2 of 20
2. Question
Dot or scalar product of Electric intensity E and vector area A of a surface is called?
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Question 3 of 20
3. Question
If the distance between the two point charges is doubled, the force between them decrease by?
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Question 4 of 20
4. Question
The electric intensity due to positive point charge is always directed?
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Question 5 of 20
5. Question
Capacitor is a device to?
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Question 6 of 20
6. Question
A system of two conductors separated by air or any insulating material forms?
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Question 7 of 20
7. Question
If the separation of plates of a parallel plate capacitor is halved, its capacitance?
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Question 8 of 20
8. Question
The capacitance is directly proportional to the area of?
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Question 9 of 20
9. Question
Electric field is a?
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Question 10 of 20
10. Question
Two capacitors of 3μF are joined in parallel across a battery of 15 volts, the charge stored by each will be?
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Question 11 of 20
11. Question
A region around a charged body in which another charge experiences an electric force is ca
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Question 12 of 20
12. Question
The S.1 unit of potential difference is?
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Question 13 of 20
13. Question
The work done in moving a positive charge from one point to another in an equipotential plane is?
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Question 14 of 20
14. Question
The earth is taken at a potential of?
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Question 15 of 20
15. Question
The S.1 unit of electric field intensity is N/C or?
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Question 16 of 20
16. Question
The direction of field at any point can be determined by drawing a?
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Question 17 of 20
17. Question
When a dielectric is placed in an electric field, it becomes?
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Question 18 of 20
18. Question
The electric flux is negative when the angle between E and A is?
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Question 19 of 20
19. Question
The workdone in moving a charge against the electric field is stored as?
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Question 20 of 20
20. Question
The SI units of electric charge is?
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Electrostatics
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Question 1 of 20
1. Question
When a dielectric is inserted between the plates of a capacitors, the potential difference between the plates?
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Question 2 of 20
2. Question
If the wire of uniform area of cross-section is cut into two equal parts, the resistivity of each parts will be?
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Question 3 of 20
3. Question
All electrical appliances are connected in parallel to each other between the main line and the neutral wire to get?
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Question 4 of 20
4. Question
A hollow metal sphere of radius 5 em is charged such that the potential on its surface is 10 V. The potential at a distance of 2 em from the centre of the sphere
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Question 5 of 20
5. Question
A conducting sphere of radius R, and carrying a charge q is joined to a conducting sphere of radius 2R, and carrying a charge – 2q. The charge flowing between them will be
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Question 6 of 20
6. Question
An electron enters between two horizontal plates separated by 2 mm and having a p.d. of 1000 V. The force on electron is
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Question 7 of 20
7. Question
The radius of a soap bubble whose potential is 16 Vis doubled. The new potential of the bubble will be
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Question 8 of 20
8. Question
A simple pendulum has a metal bob, which is negatively charged. If it is allowed to oscillate above. a positively charged metallic plate, then its time period will
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Question 9 of 20
9. Question
A sphere of radius 1 em has potential of 8000 V, then energy density near its surface will be
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Question 10 of 20
10. Question
Two metal spheres of radii R1 and R2 are charged to the same potential. The ratio of charges on the spheres
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Question 11 of 20
11. Question
A radioactive source in the form of a metal sphere of radius 10-2 m, emits beta particles at the rate of 5 x 1010 partiCles per sec. The source is electrically insulated. How long will it take for it’s potential to be raised by 2 volts, assuming 40% of the emitted beta particles
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Question 12 of 20
12. Question
A sphere of radius r is placed concentrically inside a hollow sphere of radius R. The bigger and smaller spheres are given charges Q and q respectively and are insulated. The potential difference between the two .spheres depends on
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Question 13 of 20
13. Question
Electric potential at equatorial point of a small dipole with dipole moment p (At r, distance from the dipole) is.
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Question 14 of 20
14. Question
Two plates are 2 em apart, a potential is applied between them, the electric field difference of 10 volts is applied between them, the electric field between the plates is
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Question 15 of 20
15. Question
Electric charges of + 10μ, +5μC, – 3μC and + 8μC are placed at the corners of a square of side √2 m. The potential at the centre of the square is
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Question 16 of 20
16. Question
A charged oil drop is to be held stationary between two plates separated by a distance of 25mm . If the mass of the drop is 5 x 10-15 kg and the charge on it is l0-18 C the potential to be applied between the two plates is (g = 10 ms-2)
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Question 17 of 20
17. Question
A charge Q is placed at each of the opposite corners of a square. A charge q is placed at each of the other two corners. If the net electric force on Q is zero, then Q/q equals
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Question 18 of 20
18. Question
Let P(r) = Qr/πR4 be the charge density distribution for a solid sphere of radius R and total charge Q. For a point ‘p’ inside the sphere at distance r1 from the centre of the sphere, the magnitude of electric field is
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Question 19 of 20
19. Question
Two points P and Q are maintained at the potentials of 10 V and – 4 V, respectively. The work done in moving 100 electrons from P to Q is
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Question 20 of 20
20. Question
This question contains Statement-1 and statement-2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement 1 : For a charged particle moving from point P to point Q, the net work done by an electrostatic field on the particle is independent of the path connecting point P to point Q. Statement 2 : The net work done by a conservative force on an object moving along a closed loop is zero.
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Physics Aptitude Test on Electrostatics 4
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Question 1 of 20
1. Question
1 pointsCharge Q is divided into two parts which are then kept some distance apart. The force between them will be maximum if the two parts are
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Question 2 of 20
2. Question
1 pointsAll charge on a conductor must reside only on its outer surface.’ This statement is true
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Question 3 of 20
3. Question
1 pointsTwo identical metal balls with charges +2Q and -Q are separated by some distance, and exert a force F on each other. They are . joined by a conducting wire, which is then removed. The force – between them will now
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Question 4 of 20
4. Question
1 pointsIn a parallel-plate capacitor, the region between the plates is filled by a dielectric slab. The capacitor is charged from a cell and then disconnected from it. The slab is now taken out.
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Question 5 of 20
5. Question
1 pointsIn a parallel-plate capacitor of capacitance C, a metal sheet is inserted between the plates, parallel to them. The thickness of the sheet is half of the separation between the plates. The capacitance now becomes
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Question 6 of 20
6. Question
1 pointsTwo capacitors of capacitances 3 JlF and 6 JlF are charged to a potential of 12 V each. They are now connected to each other, with the positive plate of each jOined to the negative plate of the other. The potential difference across each will be
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Question 7 of 20
7. Question
1 pointsThree point charges are placed at the comers of an equilateral triangle. Assume that only electrostatic forces are acting.
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Question 8 of 20
8. Question
1 pointsA capacitor of capacitance C is charged to a potential difference V from a cell and then disconnected from it. A charge +Q is now given to its positive plate. The potential difference across the capacitor is now
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Question 9 of 20
9. Question
1 pointsIn the previous question, if e = electronic charge, the minimum magnitude of Q is
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Question 10 of 20
10. Question
1 pointsIf the earth’s surface is treated as a conducting surface with some charge, what should be the order of magnitude of the charge per unit area, in C/m 2, so that a proton remains suspended in space near the earth’s surface?
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Question 11 of 20
11. Question
1 pointsA 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
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Question 12 of 20
12. Question
1 pointsTwo particles, each of mass m and carrying charge Q, are separated by some distance. If they are in equilibrium under mutual gravitational and electrostatic forces then Q/m (in C/kg) is of the order of
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Question 13 of 20
13. Question
1 pointsWhich of the following is not true for a region with a uniform electric field?
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Question 14 of 20
14. Question
1 pointsIn a certain charge distribution,. all points having zero potential· can be joined by a circle S. Points inside S have positive potential, and points outside S have negative potential. A positive charge, which is free to move, is placed inside S.
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Question 15 of 20
15. Question
1 pointsA positive point charge, which is free to move, is placed inside a hollow conducting sphere with negative charge, away from its centre. It will
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Question 16 of 20
16. Question
1 pointsA solid sphere of radius R is charged uniformly. At whl1l distance from its surface is the electrostatic potential half of lhe potential at the centre?
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Question 17 of 20
17. Question
1 pointsA spring-block system undergoes vertical oscillation above a large horizontal metal sheet with uniform positive charge. The time period of the oscillation is T. If the block is given a charge Q, its time period of oscillation will be
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Question 18 of 20
18. Question
1 pointsIn a parallel-plate capacitor, the region between the plates is filled by a dielectric slab. The capacitor is connected to a cell and the slab is taken out
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Question 19 of 20
19. Question
1 pointsA spherical equipotential surface is not pOSSible
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Question 20 of 20
20. Question
1 pointsA point charge Q is moved along a circular path around another fixed point charge. The work done is zero
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