AC & DC Flashcards by Yug Patel | Brainscape

Q

What is alternating current?

A

Direction the current is flowing switches every few seconds as the voltage is fluctuating from positive to negative
All of UK households are AC

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Q

What is direct current?

A

Current is always flowing in the same direction (either positive or negative)
Supplied by cells / batteries

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Q

What is the frequency and voltage of UK households?

A

AC current
50 Hz
230 V
Voltage fluctuates from -230V to +230V, happens 50x a second

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Q

What is an oscilliscope?

A

Displays change in voltage over time as a graph

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