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Find the time required for a 50 Hz alternating current to change its value form zero to the rms value.

muthhu swami , 11 Years ago
Grade 10
anser 1 Answers
Arun Kumar

Last Activity: 11 Years ago

Hello Student,
\\v(t)=vsin(2\pi 50t) \\v_{rms}={ v \over \sqrt2} \\=>$so v(t)=0 at t=0$ \\=>v(t)={v \over \sqrt2} \\=>2\pi 50t={\pi \over 4} \\=>t={1 \over 100}
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
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