# MCQs on How Charge Stored in Capacitors

Capacitor is the basic component of Electronics technology almost every PCB (Printed Circuit Board) contains a large quantity of capacitors just like resistors. I am providing you Multiple Choice Questions and Answers (MCQs) on how charge/energy stored in capacitor to the aim of facilitating the students, technicians and teachers of multiple fields throughout the world.

## Capacitor – Definition

Capacitor is used to store electrical charge or energy. It contains two conducting plates in parallel and one dielectric used between the plates. Capacitance is the ability of Capacitor to store the charge.

## How Charge Stored in Capacitors (MCQs)

Q1. The unit of the Capacitance is _______.

1. Kelvin
3. Coulomb
4. Siemen

Q2. Capacitor consists of an insulator called _________.

1. Inductor
2. Dielectric
3. Fiber
4. a & b are correct

Q3. Capacitor consists of ________Conductor Plates.

1. 4
2. 2
3. 3
4. 1

Q4. The ability of Capacitor to block ______voltages while passing AC Signal.

1. DC
2. AC
3. Frequency
4. a & b are correct

Q5. On higher frequency, the opposition to AC Input becomes_______.

1. Low
2. Higher
3. Double
4. Zero

Answer: a [ Frequency is inversely proportional to the Capacitor ability to stop DC voltage]

Q6. Common Faults/Problems in Capacitors are ________.

1. Open
2. Short
3. Leakage
4. All are correct

Q7. The capacitance of the capacitor depends on the ________.

1. Conductors
2. Dielectric
3. Electric isolator
4. b & c are correct

Q8. The Capacitor is also called (Old Term) ________.

Q9. The capacitance is a ________ Component.

1. Active
2. Passive

Q10. What is the formula _______ to find the charge stored in capacitor ?

1. Q=C/F
2. Q=CV
3. Q=CF
4. Q=FV

Q11. The unit of a charge is __________.

1. Pascal
2. Coulomb
4. Henry

Q12. Without any series ___________ , the charging of capacitor is instantaneous (Rapid).

1. Inductor
2. Resistance
3. Condenser
4. Diode

Q13. Capacitor charges on how much voltages when 50 V are applied ?

1. 100
2. 40
3. 50
4. 60

Q14. During charging or discharging of a Capacitor, current does not flow through the dielectric.                                                                                                                                                                 YES/NO

Q15. The capacitance value of a capacitor depends on _______.

1. Area of Conductor Plates
2. Dielectric Constant
3. Distance between Conductor Plates
4. All are correct

Q16. What is the formulae to find the area of capacitor plates ?

1. A= cd/kε0
2. A=kC/D
3. A=CD. ε0
4. A=QV

Q17. The Capacitance of a Capacitor is ______ proportional to the size of Conductor Plates.

1. directly
2. indirectly

Q18. The symbol of “k” in Capacitor represents _______.

Q19. In the Capacitor, the distance of Conducting Plates becomes half then Capacitance becomes ______.

1. double
2. same
3. half
4. zero

Answer: d [ Capacitance (Storage of Charge) is indirectly proportional to the distance of conducting plates ]

Q20. _______ is the ability of a dielectric to concentrate the electric field.

1. Dielectric Constant
2. Capacitance
3. Inductance
4. a & b are correct

Q21. The dielectric constant of air or vacuum is ______.

1. 4
2. 6
3. 1
4. 3

Q22. ________ are used as dielectric in the Capacitor.

1. Air or Vacuum
2. Aluminum oxide
3. Mica
4. all are correct