Resistors

Resistors are designed to restrict current flow through the wires. The amount by which this happens is measured in Ohms. A standard color chart and the four color bands located on each resistor can be used to determine which resistor is needed in a circuit, or what amount of resistance a particular resistor will provide.

Use the Resistance Calculator below to determine the resistance based on the colors you select.

Graphical Resistance Calculator

  Graphical Resistance Calculator courtesy of Danny Goodman, copyright 1996.
Illustration: YO (San Francisco)