This document discusses basic electrical concepts including power, voltage, current and their relationships. It defines electrical power as being equal to voltage multiplied by current. It also explains that power remains the same if both voltage and current are varied inversely, while distinguishing between high and low voltage and current. Finally, it defines that power is zero if current is zero, and provides the conversion that 1 kilowatt equals 1000 watts.

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Electrical Power

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Sound
Light!
Heat

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Electrical Power
p = V x I
P = electrical power in watts (W)
V = voltage in volts (V)
I = current in amps (A)

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V = E

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High Voltage
Low Voltage
Low Current
High Current
Same Power

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I = 0
P = VI
= V x 0
= 0

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Kilowatt (kW) = 1000 W