Q. In an AC circuit, an ammeter measures __ value of current.
Solution:
RMS measurement, like average and peak, only applies to measuring AC, though it may be superposed to a DC offset.
Measuring RMS values is a bit more expensive than measuring average values, so most multimeters avoid the former. Instead they presume your signal is a sine and measure the average value for the rectified sine or the peak value, after which they apply a conversion factor to find the presumed RMS value.
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