Tag: AC Phase

Let’s connect three AC voltage sources in series and use complex numbers to determine additive voltages. All the...

Complex numbers are useful for AC circuit analysis because they provide a convenient method of symbolically denoting...

Since complex numbers are legitimate mathematical entities, just like scalar numbers, they can be added, subtracted,...

In order to work with complex numbers without drawing vectors, we first need some kind of standard mathematical...

If vectors with uncommon angles are added, their magnitudes (lengths) add up quite differently than that of scalar...

Remember that vectors are mathematical objects just like numbers on a number line: they can be added, subtracted,...

OK, so how exactly can we represent AC quantities of voltage or current in the form of a vector? The length of the...

If I needed to describe the distance between two cities, I could provide an answer consisting of a single number in...

One of the more fascinating applications of electricity is in the generation of invisible ripples of energy called...

Things start to get complicated when we need to relate two or more AC voltages or currents that are out of step with...

Over the course of the next few chapters, you will learn that AC circuit measurements and calculations can get very...

So far we know that AC voltage alternates in polarity and AC current alternates in direction. We also know that AC can...

When an alternator produces AC voltage, the voltage switches polarity over time, but does so in a very particular...

Most students of electricity begin their study with what is known as direct current (DC), which is electricity flowing...