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CAPACITORS

Quiz by Adrian Haigh

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10 questions
Show answers
  • Q1
    What is the unit of capacitance?
    Ohm
    Farad
    Watt
    Volt
    30s
  • Q2
    When two capacitors are connected in series, how is the total capacitance calculated?
    \frac{1}{C_{total}} = \frac{1}{C_1} + \frac{1}{C_2}
    C_{total} = C_1 + C_2
    C_{total} = \frac{C_1 \cdot C_2}{C_1 + C_2}
    C_{total} = C_1 - C_2
    30s
  • Q3
    What occurs when a capacitor is charged?
    Electrical energy is stored in the electric field
    It emits light
    It produces heat
    It creates a magnetic field
    30s
  • Q4
    What happens to the charge stored in a capacitor when the voltage across it is halved?
    The charge doubles
    The charge remains the same
    The charge increases by a fixed amount
    The charge is also halved
    30s
  • Q5
    What is the primary function of a capacitor in an electronic circuit?
    To amplify signals
    To store and release electrical energy
    To resist current flow
    To convert AC to DC
    30s
  • Q6
    In a parallel configuration of two capacitors, how is the total capacitance calculated?
    C_{total} = C_1 + C_2
    \frac{1}{C_{total}} = \frac{1}{C_1} + \frac{1}{C_2}
    C_{total} = \frac{C_1 \cdot C_2}{C_1 + C_2}
    C_{total} = C_1 - C_2
    30s
  • Q7
    What type of dielectric material can a capacitor use to increase its capacitance?
    A semiconductor
    An insulator
    A conductor
    A material with a high dielectric constant
    30s
  • Q8
    What is the effect of temperature on the performance of a capacitor?
    Temperature has no effect on capacitance
    Capacitance may decrease with increasing temperature
    Capacitance always increases with temperature
    Capacitance doubles with higher temperatures
    30s
  • Q9
    Which of the following is a common application of capacitors in electronic circuits?
    Filtering signals in power supply circuits
    Storing digital data
    Generating power from sunlight
    Providing resistance to current
    30s
  • Q10
    Which type of capacitor is known for its large capacitance in a small package, often used for energy storage?
    Mica capacitor
    Ceramic capacitor
    Electrolytic capacitor
    Film capacitor
    30s

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