Hello, I have been taught and seen that there is a lead of current in a capacitor by 90degrees and lag of current in a inductor by 90 degrees. What is the reason behind the phase shifts in these components ! pls do let me know fast..........
Essentially its because the current-voltage relationship for capacitors and inductors is of a variable that is dependant on a rate of change of an instantaneous value in the other variable, i.e. for a capacitor i = C(dv/dt) and for an inductor v = L(di/dt); where the derivative expression is the rate of change of an instantaneous value in the other variable. For an explanation of the situation for a capacitor see: Volume II - Chapter 4.2 For an explanation of the situation for an inductor see: Volume II - Chapter 3.2 Dave
That and the following little nuggets Code ( (Unknown Language)): d(sin(x))/dx = cos(x) d(cos(x))/dx = -sin(x) so cos(x) = sin(x-90degrees) and -sin(x) = cos(x+90degrees) Curious how things unfold