kiloOhms

A kilohm is a unit of electrical resistance equal to one thousand ohms. Its symbol is kΩ, combining the SI prefix kilo- (k) with the ohm symbol Ω. Since one kilohm equals 1000 ohms, 2 kilohms equals 2000 ohms, and so on. The kilohm is widely used in electronics to express resistance values that are larger than a few ohms but smaller than a megohm. In practice, many resistors and circuit impedances are specified in the kilohm range, such as 1 kΩ, 4.7 kΩ, and 10 kΩ.

Resistance, measured in ohms, is defined as the opposition to the flow of electric current. In circuit calculations, R may be written in kilohms and voltages in volts, with current in amperes, according to Ohm's law V = IR. When performing arithmetic, values in kilohms are converted to ohms by multiplying by 1000 (for example, 3 kΩ = 3000 Ω).

Notes on usage: the kilo- prefix uses a lowercase k in SI notation, so the correct symbol for kilohom is kΩ. In some older texts or informal contexts, capital K may be seen, but kilohm is properly represented as kΩ to avoid confusion. Kilohms are commonly encountered in resistor-value labeling and in impedance calculations within electronic circuits.