Question

the peak value of an ac of frequency 50 hz is 14.14 ampere. find the rms value of current. how much time will the current take in reaching from zero to maximum value

Answer 1

Dear Student
$$\begin{gathered} Relationbetweenpeakvalueofcurrentandr.m.s.valueofcurrentis \\ {I}_{rms}=\frac{I_o}{\sqrt{2}}=\frac{14.14}{\sqrt{2}}=9.99=10A \\ Timetaketoreachfromzerotopeakvaluet=\left(\frac{T}{4}\right)= \\ t=\left(\frac{1}{4\nu }\right)=\left(\frac{1}{4\times 50}\right)=\frac{1}{200}=5.0\times {10}^{-3}s \end{gathered}$$
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