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Voltage Divider

The voltage divider (also known as the potential divider) is a basic but very important electric circuit used to convert a high voltage to a small value in electronics. Voltage dividers are often used to decrease the size of a voltage or provide a reference voltage. They may also be used as a signal attenuator at low frequencies. Let’s study this in more detail.

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StudySmarter Editorial Team

Team Voltage Divider Teachers

  • 6 minutes reading time
  • Checked by StudySmarter Editorial Team
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Contents
Contents

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    Flashcards in Voltage Divider 4

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    When do voltmeters need voltage dividers to measure the value of the voltage?

    When the voltage value is too big.

    Which of the following is not one of the areas that voltage dividers are used in?


    Current measurement.

    Which output ratio should be used to transform 10 volts into 2.5 volts?


    2.5/10

    Considering Ohm’s law, if the current value is constant, what is the relation between the voltage and the resistance?


    They are directly proportional.
    Voltage Divider Voltage Divider
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    Frequently Asked Questions about Voltage Divider

    What does a voltage divider do?

    A voltage divider is used to scale up or scale down the voltage of a source for different purposes.

    How do you build a voltage divider?

    You can build a voltage divider using two resistors connected in series and an input voltage.  

    What is a voltage divider circuit?

    A voltage divider is a circuit that consists of a series of resistors. The divide-down ratio is set by two resistors, and the output voltage is a fixed proportion of the input voltage.

    How do you apply the voltage divider rule? 

    After you note down the variables, input voltage, the resistance of the resistor (which the output voltage is measured on), and the total series resistance, then the output voltage of a voltage divider can be found from the resistance value of the output component divided by the total series resistance and multiplied by the voltage value of the source.

    How do you calculate the voltage divider?

    After you note down the variables, input voltage, the resistance of the resistor (which the output voltage is measured on), and the total series resistance, then the output voltage of a voltage divider can be found from the resistance value of the output component divided by the total series resistance and multiplied by the voltage value of the source.

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    Test your knowledge with multiple choice flashcards

    When do voltmeters need voltage dividers to measure the value of the voltage?

    Which of the following is not one of the areas that voltage dividers are used in?

    Which output ratio should be used to transform 10 volts into 2.5 volts?

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    StudySmarter Editorial Team

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