- #1
Northbysouth
- 249
- 2
Homework Statement
Determine the rms value of v(t) = 15 + 10cos(20πt)
Homework Equations
Vrms = √(1/T*∫T0v2dt
The Attempt at a Solution
√(10*∫0.10[15+10cos(20πt)]2dt
Unless, I'm much mistaken I should be able to plug the equation into the formula I have given above. I used the integral function on my calculator to do the calculation and I got 24.98V but the answer is supposed to be 16.58V
Any suggestions for where I'm going wrong?