- #1
elctronoob
- 13
- 3
Homework Statement
Sorry for what will likely be considered a noob question but I've been stuck on it for a while and its only at the start of my assignment :(
Simple circuit
Vac = 50Sin200πt, R1 = 40Ω
Calculate the value of the RMS current
Homework Equations
Vt = Vmax sin2πft = Vmax sinωt
The Attempt at a Solution
I can't figure out how to do this when we are given no value for time at all. I think i have it worked out at say 1ms
Vt = 50sin((200π)(0.001))
= 50sin(.628318)
= 54.83V
Vrms = 54.83 * .7071 = 38.77
Irms = Vrms / R = 38.77 / 40 = 0.969 amperes
We have been told that time is intended to be an unknown variable. It's been a long time since I've look at any of these types of problems, can someone help me out on what I'm missing here please
Thanks