Alternating current

The video explains how electric charge in alternating current (AC) changes direction periodically, with a frequency of 50 or 60 Hertz. This causes a flicker in fluorescent bulbs. AC is used in power distribution because its voltage can be transformed, allowing electricity to be transmitted over long distances and then reduced to safer levels for use in homes and businesses.

What is the frequency of Main's electricity?

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How many times does the current change direction in one second at a frequency of 50 Hertz?

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Why is electrical power distributed as alternating current?

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What role do transformers play in the distribution of electricity?

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How does the voltage change when electricity is carried over great distances?

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