Capacitance Quiz | Capacitance Multiple Choice Questions and Answers

Questions
1 Capacitor is a device used to__________
A store electrical energy
B vary the resistance
C store magnetic energy
D dissipate energy

Answer: store electrical energy
2 Capacitor stores which type of energy?
A potential energy
B heat energy
C kinetic energy
D vibrational energy

Answer: potential energy

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3 For which medium capacitance is high?
A Metal
B Water
C Mica
D Air

Answer: Metal
4 Which of the following is a passive device?
A Vaccuum Tubes
B Capacitor
C Rectifier
D Transistor

Answer: Capacitor
5 What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?
A 4F
B 8F
C 2F
D 6F

Answer: 4F
6 Why does capacitor block dc signal at steady state?
A due to zero frequency of dc signal
B capacitor doesnot pass any current at steady state
C due to zero frequency of dc signal
D due to high frequency of dc signal

Answer: due to zero frequency of dc signal
7 Capacitor blocks__________ after long time.
A direct current
B alternating current
C both alternating and direct current
D neither alternating nor direct current

Answer: direct current
8 The capacitance between two plates increases with
A Larger plate area and shorter distance between plates
B Larger plate area, longer distance between plates and higher applied voltage
C Shorter play area and shorter distance between them
D Shorter plate area and higher applied voltage

Answer: Larger plate area and shorter distance between plates
9 ..........is that property of a capacitor which delays any change of voltage across it
A Capacitance
B Potential gradient
C Inductance
D None of the above

Answer: Capacitance
10 A capacitor consists of two
A Conductors separated by an insulator
B Silver coated insulators
C Ceramic plates and one mica disc
D Insulators separated by a dielectric

Answer: Conductors separated by an insulator
11 ..............field is associated with the capacitor
A Magnetic
B Electric
C Both A and B
D none of the mentioned

Answer: Electric
12 Which of the following capacitors will have least energy stored in it ?
A A 600 μF capacity charged to 15 KG
B A 1 μF capacitor charge to 5 KV
C A 20 μF capacitor is charged to 400 volt
D Energy stored in each above will be same

Answer: A 600 μF capacity charged to 15 KG
13 A capacitor consists of
A Two conductors separated by an insulator
B Two insulators separated by a conductor
C Two insulators only
D Two conductors only

Answer: Two conductors separated by an insulator
14 In a capacitor the electric charge is stored in
A Dielectric
B Metal plates
C Both A and B
D None of the above

Answer: Dielectric
15 In the case of a lossy capacitor, its series equivalents resistance value will be
A Very small
B Small
C Large
D Zero

Answer: Large
16 Which of the following capacitors will have the least value of breakdown voltage?
A Electrolytic
B Ceramic
C Mica
D Paper

Answer: Electrolytic
17 Which capacitor will be physically smaller for the same ratings ?
A Paper capacitor
B Ceramic capacitor
C Both will be equal size
D None of the above

Answer: Ceramic capacitor
18 The capacitor preferred for high-frequency circuit is
A Mica capacitor
B Air capacitor
C Electrolytic capacitor
D None of the above

Answer: Mica capacitor
19 Which of the following capacitors has relatively shorter shelf life?
A Electrolytic capacitor
B Paper capacitor
C Ceramic capacitor
D Mica capacitor

Answer: Electrolytic capacitor
20 Which of the following capacitors will have the least variation?
A Silver plated mica capacitor
B Ceramic capacitor
C Paper capacitor
D None of the above

Answer: Silver plated mica capacitor
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