Correct. Thank you.
OK, then, let's look at phase.
This will be, initially, short but it should demonstrate the
how and
why of phase. No math here, just the phenomenon.
Also, understand that ANY sine-wave (in the case) is composed of both a
voltage component AND a
current component. They are both in perfect "sync" as they come from the VG.
This is a
resistive circuit in which no phase "shift" occurs. In a simple resistive circuit the phase of the signal sources are the same for both voltage and current. They
instantaneously occur at the exact same time. Resistance, all by its lonesome, has NO effect on phase.
View attachment 62586
This, however, is a capacitive
only circuit where the capacitor, due to it's charging characteristics, forces the
current wave to"peak", or go immediately to the maximum the circuit will allow, while the start of the
voltage wave is still at zero. I realize this will strike you as impossible, but these things happen
instantly, and the math backs that up.
The graph shows a slight "hesitation" in the very first current peak but that's an anomaly of the sim. For the math of this, peak current is instantaneous at time zero of the start of the sine-wave. And note that the timing of the peak of the voltage of the sine-wave is 1/4 of it's wavelength
later, or 90°. The voltage sine-wave is 90°
out of phase with the current sine-wave.
View attachment 62587
Now here' a resistive/capacitive circuit. Note the phase difference. Can you explain this (comparing it the the previous two)?
View attachment 62588
Tell me what you think.