Question

The peak value of an Alternating current is 6 amp, then r.m.s. value of current will be
(a) 3 A
(b) 3√3 A
(c) 3√2 A
(d) 2√3 A

Answer 1

answer : option (c) 3√2 A

explanation :- it is given that, peak value of alternating current =

we have to find rms value of current of alternating current.

we know, an important formula,
$\quad I_{rms}=\frac{I_p}{\sqrt{2}}$

where $I_{rms}$ denotes rms value of current through alternating current and $I_p$ denotes the peak value of current through alternating current.

here, $I_p=6A$

so, $I_{rms}=\frac{6}{\sqrt{2}}=3\sqrt{2}$A.