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General Physics 2 : Capacitance and Dielectrics

Quiz by Ysabel Angela Embile

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10 questions
Show answers
  • Q1
    A 6 microfarad capacitor, initially uncharged, is connected to the terminals of a 9-V, battery. What total amount of charge flows through the battery?
    1.5 micro farads
    54 microfarads
    54 farads
    1.5 farads
    120s
  • Q2
    A circuit consists of a 6 micro farads capacitor (C1), a 12 micro farads capacitor (C2) and a 12 V battery. What is the charge on each capacitor plate?
    Q1=2 micro farads and Q2=1 micro farads
    Q1=1/2 micro farads and Q2=1 micro farad
    Q1=6 micro farads and Q2=12 micro farads
    Q1=72 micro farads and Q2=144 micro farads
    120s
  • Q3
    Capacitance increases with
    Larger plate area and greater distance between them
    Higher values of applied voltage
    Larger plate areas and less distance between them
    Smaller plate areas and less distance between them
    30s
  • Q4
    If the voltage across a parallel-plate capacitor is doubled, its capacitance
    remains the same
    doubles
    drops by half
    30s
  • Q5
    A parallel plate capacitor consists of two plates with a total surface area of 100 cm2. What will be the capacitance in pico-Farads, (pF) of the capacitor if the plate separation is 0.2 cm, and the dielectric medium used is air.
    Question Image
    44 micro farads
    4.29 x 10^13 pF
    44.25 F
    44 pF
    300s
  • Q6
    Which of the following statements regarding dielectrics is not true?
    It increases dielectric strengths
    A dielectric inserted into a capacitor increases its capacitance
    A dielectric is a devise for storing charge and energy
    Its physically separates the conductors
    45s
  • Q7
    If a dielectric material, such as Teflon, is placed between the plates of a parallel-plate capacitor without altering the structure of the capacitor. How is the capacitance affected?
    The capacitance increases because of the insertion of Teflon
    The capacitance decreases because of the insertion of Teflon
    The capacitance remains the same because of the insertion of Teflon
    45s
  • Q8
    A dielectric material, such as Teflon, is placed between the plates of the parallel-plate capacitor without altering the structure of the capacitor. The charge on the capacitor is held fixed. How is the voltage across the capacitor affected?
    The voltage decreases because of the insertion of Teflon
    The voltage remains the same because of the insertion of Teflon
    The voltage increases because of the insertion of Teflon
    45s
  • Q9
    The voltage applied across a given parallel-plate capacitor is doubled. How is the energy stored in the capacitor affected?
    The energy stored in the capacitor becomes half its original value
    The energy stored in the capacitor quadruples its original value
    The energy stored in the capacitor doubles its original value
    45s
  • Q10
    A capacitor is constructed from two conductive metal plates 30cm x 50cm which are spaced 6mm apart from each other, and uses dry air as its only dielectric material. Calculate the capacitance of the capacitor.
    Question Image
    2.21 x 10 ^ -11 F
    2.21 x 10 ^ -12 microF
    0.221 nF
    0.221 F
    300s

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