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**kilo**-
Metric prefix for 1000. (10

^{3}) **kilovolt-ampere**-
1000 volts at 1 ampere.

**kilowatt-hour**-
1000 watts for 1 hour.

**kilowatt-hour meter**-
A meter used by electric utility companies to measure the amount of electric power used by a customer.

**kinetic energy**-
Energy associated with motion.

**Kirchoff's current law**-
The sum of the currents flowing into a point in a circuit is equal to the sum of the currents flowing out of that same point.

**Kirchoff's voltage law**-
The algebraic sum of the voltage drops in a closed path circuit is equal to the algebraic sum of the source voltages applied.

**knee voltage**-
The voltage at which a curve joins two relatively straight portions of a characteristic curve. For a PN junction diode, the point in the forward operating region of the characteristic curve where conduction starts to increase rapidly. For a zener diode, the term is often used in reference to the zener voltage rating.