Ohm's Law and Peak vs. Root-Mean-Square (RMS) signals ... AC

This is the simplest of the simplest - just a resistor and an (AC - to let you see what's going on better) voltage source. It also calculates POWER and RMS voltage, current and power - check these by hand-calculation to confirm your understanding. Remember that RMS stands for Root Mean Square - so:-

  1. Figure out what the squared V, I or P is over one cycle
  2. Take the mean of that
  3. Take the square root of that ... you now have your RMS thing.
Image of sine waves
Image of sine waves