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For an electron, the journey from terminal to terminal is not a direct route.Rather, it is a zigzag path that results from countless collisions with fixed atoms within the conducting material.
The table below lists resistivity values for various materials at temperatures of 20 degrees Celsius.
As seen in the table, there is a broad range of resistivity values for various materials.
Perhaps you're doing a lab and need to know the resistance of a resistor used in the lab.
Use the widget below to determine the resistance value from the colored stripes. Household circuits are often wired with two different widths of wires: 12-gauge and 14-gauge.
Like the resistance to water flow, the total amount of resistance to charge flow within a wire of an electric circuit is affected by some clearly identifiable variables.
First, the total length of the wires will affect the amount of resistance.
Resistance is a numerical quantity that can be measured and expressed mathematically.
The standard metric unit for resistance is the ohm, represented by the Greek letter omega - .
The longer the wire, the more resistance that there will be.
There is a direct relationship between the amount of resistance encountered by charge and the length of wire it must traverse.