Ohm’s Law (Lesson 2)

• a component that has a constant resistance is:

  an ohmic conductor
• components that do not obey Ohm’s Law are:

  non-ohmic components
• Non-Ohmic component examples are:


  filament lamps, diodes, LEDs
• on a graph, ohmic conductors are displayed as:

  the current and voltage being always proportional
• on an I/V graph, ohmic conductors show

  a straight line through the origin
• when the gradient flattens on a graph:

  the resistance increases