A level Capacitance Quiz 1

16 Questions

Quiz Description

In A level Capacitance quiz 1, we will see that the ability of a capacitor to store DC charge and to offer relatively low impedance to alternating frequency signals make them useful in power supply circuits and bypass applications. Thus they are a very much important part of tuning and filter circuits. Capacitors are used in our everyday life, some as temporal batteries to prevent loss of information when actual batteries are removed from electronic devices.

In the course of taking this quiz, you will understand how capacitors function in general.
A capacitor is a device used to store an electric charge, consisting of one or more pairs of conductors separated by a  dielectric. They are used in electronic circuits for blocking direct current while allowing alternating current to pass. In analog filter networks, for example, they smooth the output of power supplies. A capacitor functions such that it draws energy from a battery and stores the energy And when activated, a capacitor will quickly release electricity in a tiny fraction of a second.

This is one of the very few fertile topics in Physics, students will be tested from this during their end-of-year Exams, so taking this quiz will help boost your grades on your Exams. Several quizzes are available on our website on many different topics and subjects, be sure to check them out when you are done.
Good Luck! 

1:

Capacitor is a device used to__________


Correct
  • 1:
    store electrical energy
  • 2:
    vary the resistance
  • 3:
    store magnetic energy
  • 4:
    dissipate energy
2:

 Capacitor stores which type of energy?


Correct
  • 1:
    kinetic energy
  • 2:
    vibrational energy
  • 3:
    potential energy
  • 4:
    heat energy
3:

Capacitor blocks__________ after long time.


Correct
  • 1:
    direct current
  • 2:
    alternating current
  • 3:
    both alternating and direct current
  • 4:
    neither alternating nor direct current
4:

Why does capacitor block dc signal at steady state?


Correct
  • 1:
    due to high frequency of dc signal
  • 2:
    due to zero frequency of dc signal
  • 3:
    capacitor doesnot pass any current at steady state
  • 4:
    due to zero frequency of dc signal
5:

If a parallel plate capacitor of plate area 2m^2 and plate separation 1m store the charge of 1.77x10^-11 C. What is the voltage across the capacitor?


Correct
  • 1:
    1V
  • 2:
    2V
  • 3:
    3V
  • 4:
    4V
6:

Which of the following is a passive device?


Correct
  • 1:
    Transistor
  • 2:
    Rectifier
  • 3:
    Capacitor
  • 4:
    Vaccuum Tubes
7:

 What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?


Correct
  • 1:
    2F
  • 2:
    4F
  • 3:
    6F
  • 4:
    8F
8:

For which medium capacitance is high?


Correct
  • 1:
    Air
  • 2:
    Mica
  • 3:
    Water
  • 4:
    Metal
9:

The capacitance between two plates increases with


Correct
  • 1:
    Shorter plate area and higher applied voltage
  • 2:
    Shorter play area and shorter distance between them
  • 3:
    Larger plate area, longer distance between plates and higher applied voltage
  • 4:
    Larger plate area and shorter distance between plates
10:

The capacitance is a circuit component that oppose the change in circuit


Correct
  • 1:
    Current
  • 2:
    Voltage
  • 3:
    Impedance
  • 4:
    None of the above
11:

The ohmmeter reading for a short circuited capacitor is


Correct
  • 1:
    Infinity
  • 2:
    Few kilo ohms
  • 3:
    Few megaohms
  • 4:
    Zero
12:

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


Correct
  • 1:
    All in series
  • 2:
    All in parallel
  • 3:
    Two in parallel and third in the series with this combination
  • 4:
    Two in series and third in parallel across this combination
13:

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


Correct
  • 1:
    20 μF
  • 2:
    30 μF
  • 3:
    50 μF
  • 4:
    40 μF
14:

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


Correct
  • 1:
    5 μF
  • 2:
    30 μF
  • 3:
    45 μF
  • 4:
    50 μF
15:

Which of the following capacitors will have the least variation?


Correct
  • 1:
    Paper capacitor
  • 2:
    Silver plated mica capacitor
  • 3:
    Ceramic capacitor
  • 4:
    None of the above
16:

Which of the following capacitors has relatively shorter shelf life?


Correct
  • 1:
    Mica capacitor
  • 2:
    Electrolytic capacitor
  • 3:
    Ceramic capacitor
  • 4:
    Paper capacitor

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A level Capacitance Quiz 1
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