I know that with DC you can measure current by putting your meter in series with the positive supply.
I have a project running off a low voltage AC supply. Can I do the same?
Measuring low voltage AC current with a multimeter
accurrent measurementlow-voltagemultimeter
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Best Answer
Many (most inexpensive?) multimeters can only measure DC current - in that case, no, you can't.
However, if your meter can measure AC current, you would connect it in series with the circuit, as you would with DC.