is approximately constant within a certain range of voltages, temperatures, and other parameters. These are called linear resistors. In other cases resistance varies, such as in the case of the thermistor, which exhibits a strong dependence of its resistance with temperature.

In the US, consecutive vowels in the prefixed units "kiloohm" and "megaohm" are commonly reduced to one, producing "kilohm" and "megohm".

In alternating

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