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Series and parallel circuits

Quiz by Shirley Quan (PS)

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13 questions
Show answers
  • Q1
    In a series circuit, what happens to the total resistance when more resistors are added?
    The total resistance decreases
    The total resistance remains the same
    The total resistance increases
    The total resistance becomes zero
    30s
  • Q2
    What will happen if one resistor in a parallel circuit is removed?
    The circuit opens and no current flows
    The total resistance increases
    The other resistors will stop working
    The total resistance decreases
    30s
  • Q3
    What is the equivalent resistance of two resistors, 4 ohms and 6 ohms, connected in series?
    2 ohms
    10 ohms
    24 ohms
    0.67 ohms
    30s
  • Q4
    What is the primary advantage of using a parallel circuit over a series circuit?
    It uses less energy
    It is simpler to construct
    It has a lower total resistance
    If one component fails, the others can still operate
    30s
  • Q5
    What happens to the brightness of bulbs connected in series if more bulbs are added?
    The brightness remains the same
    The brightness of each bulb increases
    The bulbs turn off completely
    The brightness of each bulb decreases
    30s
  • Q6
    What is the main function of a thermistor in a light emitting diode (LED) circuit?
    To amplify the light output
    To store electrical energy
    To measure temperature changes
    To convert AC to DC
    30s
  • Q7
    What type of thermistor is commonly used for measurement and control in electronic circuits?
    Phototransistor
    Silicon diode
    PTC (Positive Temperature Coefficient) thermistor
    NTC (Negative Temperature Coefficient) thermistor
    30s
  • Q8
    What property of a thermistor changes with temperature, allowing it to be used as a temperature sensor?
    Voltage
    Current
    Resistance
    Capacitance
    30s
  • Q9
    What does a light dependent resistor (LDR) do?
    It stores electrical energy
    It converts light into sound
    It measures temperature
    It changes its resistance based on light intensity
    30s
  • Q10
    In which of the following applications would you most likely use a light dependent resistor?
    In a temperature control system
    In a light-sensitive alarm system
    In a battery charging circuit
    In a water heating system
    30s
  • Q11
    What happens to the resistance of a light dependent resistor as light intensity increases?
    The resistance increases
    The resistance remains constant
    The resistance decreases
    The resistance becomes infinite
    30s
  • Q12
    What is the main advantage of using a thermistor in electronic circuits?
    Small size
    Low cost
    High power handling capability
    High sensitivity to temperature changes
    30s
  • Q13
    How does a thermistor typically respond to increasing temperature?
    Its resistance fluctuates randomly
    Its resistance stays the same
    Its resistance decreases
    Its resistance increases
    30s

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