Electrical Circuits: Series vs Parallel
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Questions and Answers

What happens to the overall current in a series circuit when additional loads are added?

  • The overall current fluctuates.
  • The overall current decreases. (correct)
  • The overall current stays the same.
  • The overall current increases.

    • In a parallel circuit with two identical bulbs connected, how does the potential difference across each bulb compare to the source?

  • It is higher than the source.
  • It is the same as the source. (correct)
  • It can vary between bulbs.
  • It is lower than the source.

    • If one bulb in a series circuit fails, what will happen to the other bulbs?

  • The circuit will increase in brightness.
  • Only the broken bulb will go out.
  • The other bulbs will continue to shine dimly.
  • All bulbs will go off completely. (correct)

    • What is true about current in a series circuit when multiple loads are present?

    <p>The current remains constant across all loads. (D)</p> Signup and view all the answers

    How does the voltage across each bulb in a series circuit relate to the total voltage supplied?

    <p>The voltage across each bulb decreases as more bulbs are added. (B)</p> Signup and view all the answers

    In a parallel circuit, if one branch is removed, what occurs in the remaining branches?

    <p>The remaining branches continue to operate normally. (B)</p> Signup and view all the answers

    When calculating total resistance in a series circuit with two loads of 10 Ω each, what is the total resistance?

    <p>20 Ω (C)</p> Signup and view all the answers

    What effect does adding additional loads to a parallel circuit have on the total current drawn from the source?

    <p>The total current increases. (B)</p> Signup and view all the answers

    In a circuit with both series and parallel components, which rule applies regarding voltage and current?

    <p>Voltage varies in series but is constant in parallel; current varies in parallel but is constant in series. (C)</p> Signup and view all the answers

    Flashcards

    Series Circuit: Current Flow

    In a series circuit, the current has only one path to flow through all components. Imagine a single lane highway where all cars must follow the same route.

    Series Circuit: Voltage Division

    Components connected in series share the total voltage from the source. As you add more components, the voltage available for each individual component decreases.

    Parallel Circuit: Current Flow

    In a parallel circuit, the current has multiple paths to flow. Imagine a multi-lane highway where cars can take different routes.

    Parallel Circuit: Voltage Distribution

    Components connected in parallel have the same voltage across them, which is equal to the source voltage. Each component gets the full voltage.

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    Series Circuit: Bulb Brightness

    Adding more light bulbs in a series circuit decreases the brightness of each bulb. This is because the total voltage is divided among all the bulbs.

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    Parallel Circuit: Bulb Brightness

    Adding more light bulbs in a parallel circuit maintains the brightness of each bulb. Each bulb gets the full voltage from the source.

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    Series Circuit: Open Circuit

    If one bulb breaks in a series circuit, the entire circuit is broken, and all bulbs go off. This is because the current path is interrupted.

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    Parallel Circuit: Open Circuit

    If one bulb breaks in a parallel circuit, the other bulbs continue to work. This is because the current can flow through the remaining paths.

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    Series Circuit: Total Resistance

    The total resistance in a series circuit is the sum of the individual resistances. More resistors means more resistance.

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    Parallel Circuit: Total Resistance

    The total resistance in a parallel circuit is less than the smallest individual resistance. More paths means less resistance overall.

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    Study Notes

    Series Circuits

    • In series circuits, there is only one path for current flow.
    • Total resistance increases as more loads (e.g., light bulbs) are added.
    • Voltage across each load decreases with addition of loads.
    • If one load fails, the entire circuit is broken.
    • Each load acts as a resistor, affecting the overall current.

    Parallel Circuits

    • Parallel circuits have multiple paths for current flow.
    • The voltage across each load is the same as the source voltage.
    • Total current through the circuit is the sum of currents through all branches.
    • Loads operate independently. If one load fails, the others remain functional.
    • Voltage is constant across each parallel branch, sum of currents equals total current coming out of source.

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    Related Documents

    Series vs. Parallel Circuits PDF

    Description

    This quiz tests your understanding of series and parallel circuits. Learn the key differences in current flow, resistance, voltage, and the impact of load failure in each type of circuit. Perfect for electronics students or anyone interested in electrical principles.

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