Electricity Flashcards: Volts, Amps, Watts, Hertz
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Questions and Answers

What is the pressure that pushes electric current through a wire?

  • Hertz
  • Voltage (correct)
  • Amp
  • Watts

    • Voltage, which is the pressure that pushes electrical current through a wire, is measured in [...].

    volts

    What measures the strength of a current of electricity?

    Amp

    What is 'Amp' short for?

    <p>Ampere</p> Signup and view all the answers

    What is a measure of power?

    <p>watts</p> Signup and view all the answers

    Watts can be calculated using the formula [...].

    <p>Amps x volts</p> Signup and view all the answers

    Watts are a measurement of the amount (or more specifically the [...]) of energy or power released or used.

    <p>rate</p> Signup and view all the answers

    Watts measure the derived power, or the rate of [...] or use of this energy.

    <p>Production</p> Signup and view all the answers

    What describes the rate of change in the directional flow of electricity?

    <p>Hertz</p> Signup and view all the answers

    In a metaphor, while standing at the shoreline, the water changes [...] and flows back out.

    <p>direction</p> Signup and view all the answers

    With electricity, the frequency of change in direction is measured per [...] and is expressed in hertz.

    <p>second</p> Signup and view all the answers

    What does 60 Hz mean?

    <p>Rate of change of directional flow is 60 times per second</p> Signup and view all the answers

    When it comes to hertz, what matters geographically?

    <p>location</p> Signup and view all the answers

    If you're in the US, what is the standard frequency in hertz?

    <p>60 Hz</p> Signup and view all the answers

    Equipment utilizing alternating-current (AC) motors uses frequency (hertz) to determine the motor [...] and to calculate time.

    <p>speed</p> Signup and view all the answers

    What might happen if you plug a 60 Hz alarm clock into a 50 Hz outlet?

    <p>be late</p> Signup and view all the answers

    Flashcards

    Voltage

    The pressure that pushes electric current through a wire.

    Unit of Voltage

    Volts

    Amp

    Measures the strength of an electric current.

    Ampere

    The unit for measuring electric current.

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    Watt

    A measure of power.

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    Power Formula

    Watts = Amps x Volts

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    Rate of Energy

    What Watts measure.

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    Hertz

    Describes the rate of change in the directional flow of electricity.

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    60 Hz

    The standard frequency of AC (alternating current) in the US.

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    Alternating Current

    Electric current that changes direction.

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    AC Motor Speed

    Determined by the frequency (Hertz).

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    50 Hz

    Standard frequency in some parts of the world.

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    Alarm Clock Problem

    A 60 Hz alarm clock on a 50 Hz outlet might run slow or fast.

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    AC Motor Use

    AC motors utilize Hertz to define and calculate time, as well as motor speed.

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    Direction Change

    Describes the changing of electricity direction.

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    Production Rate

    Describes the amount (or more specifically, the rate) of energy used or released.

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    Study Notes

    Voltage and Amperage

    • Voltage is the pressure that pushes electric current through a wire.
    • Voltage is measured in volts.
    • Amp, short for ampere, measures the strength of an electric current.

    Power and Watts

    • Watts represent a measure of power.
    • The formula for calculating watts is: Amps x Volts.
    • Watts indicate the rate at which energy or power is released or used.

    Energy Production

    • In the context of a water wheel, watts analogously represent the power produced from the flow of water.
    • Watts measure the rate of production or use of energy.

    Frequency and Hertz

    • Hertz denotes the rate of change in the directional flow of electricity.
    • A metaphor for hertz involves the natural ebb and flow of water at a shoreline, changing direction back and forth.
    • The frequency of change in direction is measured per second and is expressed in hertz.
    • 60 Hz indicates that the rate of change of directional flow of electricity occurs 60 times per second.

    Geographic Influence on Frequency

    • Geographic location affects electrical frequency standards.
    • In the United States, the standard frequency is 60 Hz.

    Applications of Hertz

    • Equipment with alternating-current (AC) motors or timer controls relies on frequency (hertz) to determine motor speed and time.
    • If a device designed for 60 Hz is plugged into a 50 Hz outlet, it may operate slower or inaccurately, resulting in running late.

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    Description

    This quiz features flashcards that cover key concepts in electricity, including definitions and measurements related to volts, amps, watts, and hertz. Test your understanding of these important electrical terms and their meanings.

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