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Electricity SAQ


AC and DC

Write a short note explaining the differences between AC and DC.

Computers are powered by Direct Current which is the same as the power produced by batteries. This is different from the type of power that is supplied to homes and businesses by electricity suppliers. The type of power supplied to home and business is called Alternating Current (AC). The difference between AC and DC power is that with AC the voltage constantly varies.Check your answer


Components of AC Electricity Supply

What 4 components comprise an AC electricity supply?

a) Voltage, measured in volts (v)

b) Current, measured in amps (A)

c) Resistance, measured in ohms (The Omega Symbol)

d) Frequency, measured in hertz (Hz)

Check your answer

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