electrical

Electrostatics and Capacitance MCQ With Answers Page - 1

1.

The force between two charges is 120 N. if the distance between the charges is doubled, the force will be

Answer/ Hint      

Answer : B

Explanation :

2.

The mass of electron is equal to

Answer/ Hint      

Answer : B

Explanation :

3.

The electric field intensity at a point situate d4 meters from a point charge is 200 N/C. if the distance is reduced to 2 meters, the field intensity will be

Answer/ Hint      

Answer : C

Explanation :

4.

Electric intensity (E) at any point in an electric field is equal to

Answer/ Hint      

Answer : A

Explanation :

5.

The lines of the force due to charge particles are

Answer/ Hint      

Answer : B

Explanation :

6.

The electric field at a point situated at a distance d from straight charged conductor is

Answer/ Hint      

Answer : B

Explanation :

7.

The direction of electric field due to positive charge is

Answer/ Hint      

Answer : A

Explanation :

8.

A field line and an equipotential surface are

Answer/ Hint      

Answer : B

Explanation :

9.

The ability of charged body to exert force on one another is attributed to the existence of 

Answer/ Hint      

Answer : D

Explanation :

10.

If the sheet of a Bakelite is inserted between plates of an air capacitor, the capacitance will

Answer/ Hint      

Answer : B

Explanation :

11.

A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is

Answer/ Hint      

Answer : A

Explanation :

12.

For making a capacitor, it is better to select a dielectric having

Answer/ Hint      

Answer : B

Explanation :

13.

The units of capacitance are

Answer/ Hint      

Answer : B

Explanation :

14.

If three 15µf capacitors are connected in series, the net capacitance is

Answer/ Hint      

Answer : A

Explanation :

15.

If three 10µf capacitors are connected in parallel, the net capacitance is

Answer/ Hint      

Answer : B

Explanation :

16.

A dielectric material must be

Answer/ Hint      

Answer : B

Explanation :

17.

The electrolysis capacitor can be used for

Answer/ Hint      

Answer : A

Explanation :

18.

The capacitance of a capacitor is not affected by

Answer/ Hint      

Answer : C

Explanation :

19.

Which of the following is not a vector?

Answer/ Hint      

Answer : D

Explanation :

20.

Two metal plates distance “d” apart from a capacitor of value C farads. Another metal plate of thickness d/2 and of the same areas is inserted in between these two plates, capacitance of this three plate capacitor will be

Answer/ Hint      

Answer : B

Explanation :

21.

Electric field inside a hollow metallic charged sphere is

Answer/ Hint      

Answer : C

Explanation :

22.

Two plates of parallel plate capacitor after being charges from a constant voltage source is separated apart by means of insulated handles, then the

Answer/ Hint      

Answer : B

Explanation :

23.

If A.C voltage is applied to capacitive circuit, the alternating current can be flow in the circuit because

Answer/ Hint      

Answer : A

Explanation :

24.

Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant?

Answer/ Hint      

Answer : B

Explanation :

25.

Which of the following statement is correct?

Answer/ Hint      

Answer : B

Explanation :

26.

The dissipation factor of a good dielectric is

Answer/ Hint      

Answer : A

Explanation :

27.

“The total electric flux through any closed surface surrounding charges is equal to the amount of charged enclosed”. The above statement is associated with

Answer/ Hint      

Answer : A

Explanation :

28.

Three capacitor each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them

Answer/ Hint      

Answer : C

Explanation :

29.

For which of the following parameter variation, the capacitance of the capacitor remains unaffected?

Answer/ Hint      

Answer : D

Explanation :

30.

Which of the following statement is true?

Answer/ Hint      

Answer : B

Explanation :

31.

Which of the following expression is correct for di-electric strength?

Answer/ Hint      

Answer : A

Explanation :

32.

In a capacitor a electric charge is stored in

Answer/ Hint      

Answer : B

Explanation :

33.

Which of the following material has the highest value of dielectric constant?

Answer/ Hint      

Answer : C

Explanation :

34.

Which of the following capacitors will have the least variation?

Answer/ Hint      

Answer : C

Explanation :

35.

Which of the following statements is incorrect?

Answer/ Hint      

Answer : B

Explanation :

36.

Which of the following capacitors has relatively shorter self-life?

Answer/ Hint      

Answer : B

Explanation :

37.

A condenser suitable for D.C only is

Answer/ Hint      

Answer : D

Explanation :

38.

In a capacitor, the electric charge is stored in

Answer/ Hint      

Answer : B

Explanation :

39.

Internal heating of a capacitor is usually attributed to

Answer/ Hint      

Answer : B

Explanation :

40.

If the dielectric of the capacitor is replaced by a conducting material

Answer/ Hint      

Answer : C

Explanation :

Electrostatics and Capacitance MCQ With Answers Page - 1
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