Electrostatics MCQ with answers

 Electrostatics mcq 

Electrostatic Charge 

Electrostatics mcq with answers: Types of questions and answers in Electrostatic Charge,  Electrostatic Charge quiz questions, and answers. 

 

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

A) 60 N
B) 30 N
C) 40 N
D) 15 N

ANSWER= (B) 30N

 

2. The lines of force due to charged particles are

A) always straight
B) always curved
C) sometimes curved
D) none of the above

ANSWER= (B) always curved

 

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

A) proportional to d
B) inversely proportional to d
C) inversely proportional to d
D) none of the above

ANSWER= (B) inversely proportional to d

 

4. Between the branch voltages of a loop Kirchhoff s voltage law imposes

A) non-linear constraints
B) linear constraints
C) no constraints
D) none of the above

ANSWER= (B)linear constraints

 

5. The direction of the electric field due to the +0 positive charge is.

A) away from the charge
B) towards the charge
C) both (a) and (6)
D) none of the above

ANSWER= (A)away from the charge

 

6. A field line and an equipotential surface are

A) always parallel
B) always at 90°
C) inclined at any angle 0
D) none of the above

ANSWER= (B)always at 90°

 

7. The ability of charged bodies to exert force on 6ne another is attributed to the existence of?

A)electrons
B) protons
C) neutrons
D) electric field

ANSWER= (D)electric field

 

8. If the sheet of bakelite is inserted between the plates of an air capacitor, the capacitance will?

A) decrease
B) increase
C) remains unchanged
D) become zero

ANSWER= (B)increase

 

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

A) 0.024 F
B) 0.12 F
C) 0.6 F
D) 0.8 F

ANSWER= (A) 0.024 F F

 

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

A) low permittivity
B) high permittivity
C) permittivity same as that of air
D) permittivity slightly more than that of air

ANSWER= (B) high permittivity

 

11. The units of capacitance are

A) volts/coulomb
B) coulombs/volt
C) ohms
D) henry/Wb

ANSWER= (B)coulombs/volt

 

12. If three 15 uF capacitors are connected in series, the net capacitance is? system?

A) 5 uF
B) 30 uF
C) 45 uF
D) 50 uF

ANSWER= (A)5 u.

 

13. If three 10 uF capacitors are connected in parallel, the net capacitance is

A) 20 uF
B) 30 uE
C) 40 uF
D) 50 uF

ANSWER= (B) 30 uE

 

14. A dielectric material must be

A) resistor
B) insulator
C) good conductor
D) semiconductor

ANSWER= (B) insulator

 

15. An electrolytic capacitor can be used for

A) D.C. only
B) AC. only
C) both D.C. as well as A.C.
D) nodes

ANSWER= (A) D.C. only