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What is the RMS value of current $i=3+4sin(\omega t+\pi/3)$?

Please give step by step solution.

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Sorry, no. Read the homework policy meta.physics.stackexchange.com/questions/714/… We're more than happy to help with conceptual questions. If you are having trouble understanding the problem please try to clarify exactly what are the concepts that are causing you trouble. But giving step by step solutions to your homework problem is just not on. To your question: R.M.S. means Root Mean Square, which describes exactly what it is: $f_{r.m.s.}=\sqrt{\left< f(t)^2 \right>}$ where $\left< \cdot \right>$ means average. – Michael Brown Jan 26 at 12:41
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Welcome to Physics! Please see our homework policy. We expect homework problems to have some effort put into them, and deal with conceptual issues. If you edit your question to explain (1) What you have tried, (2) the concept you have trouble with, and (3) your level of understanding, I'll be happy to reopen this. (Flag this message for ♦ attention with a custom message, or reply to me in the comments with @Manishearth to notify me) – Manishearth♦ Jan 26 at 12:50

closed as too localized by John Rennie, Manishearth♦ Jan 26 at 12:50

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