Question

The rms current output in a circuit is 7.75 A. What is the maximum current?

Answer 1

The maximum current in an ac circuit is related to the rms current by:
$I_{rms} = \frac{I_0}{ \sqrt{2} }$
where $I_{rms}$ is the rms current and $I_0$ is the maximum current.

If we re-arrange the formula and we use $I_{rms}=7.75 A$, we can find the value of the maximum current:
$I_0 = \sqrt{2} I_{rms} = \sqrt{2}(7.75 A)=11.0 A$