Electricity & Electronic Workbooks

(Martin Jones) #1

DC Fundamentals Unit 7 – Series Resistive Circuits


Exercise 3 – Voltage in a Series Resistive Circuit ....................................................................


EXERCISE OBJECTIVE


When you have completed this exercise, you will be able to determine the voltage in a series
resistive circuit by using a formula. You will verify your results with a multimeter.


EXERCISE DISCUSSION



  • Current flowing through a resistor generates a voltage drop across the resistor.

  • The voltage drop can be found using Ohm’s law when current and resistance are known.

  • Voltage drops are symbolized by VRn, where Rn identifies the specific resistor.

  • In a series circuit, the sum of all the voltage drops equals the applied voltage. Mathematically
    this is represented by this equation; VA = VR1 + VR2 + ... VRn

  • A reference point must be established when measuring voltage drop.


NOTES


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