Wrapping It Up

Author:
Allen Olson
So there are many ways to look at a simple formula like Ohm's law. Even though there are only three quantities involved, there are six different graphs that can be plotted:
  • Current as a function of voltage
  • Current as a function of resistance
  • Voltage as a function of current
  • Voltage as a function of resistance
  • Resistance as a function of voltage
  • Resistance as a function of current

Which of these are linear?

(Select more than one answer!)

Select all that apply
  • A
  • Current as a function of voltage

  • B
  • Current as a function of resistance

  • C
  • Voltage as a function of current

  • D
  • Voltage as a function of resistance

  • E
  • Resistance as a function of voltage

  • F
  • Resistance as a function of current

    • Check my answer (3)
    For Ohm's law, the main feature of the formula is proportionality. Even when the graph is non-linear, it is a proportional relationship... we just call it "inversely proportional." When the input is multiplied by a certain factor, the output is divided by that same factor... when the resistance is doubled, the current is cut in half (assuming the voltage remains constant).

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