Englishfor English speakers
Ac
—
noun
(= actinium)
a radioactive element of the actinide series; found in uranium ores
AC
—
noun
an electric current that reverses direction sinusoidally
In the US most household current is AC at 60 cycles per second
circuit
Noun
—
A circuit is a loop that normally starts and finishes in the same place.
They ran a circuit around the park.
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A circuit is a closed route where electricity flows.
The electric circuit can hold 20 amperes.