BELIEVE ME NOT! - - A SKEPTIC's GUIDE
Next: The Differential Equation
The term "AC" stands for "Alternating Current",
typically the 60 Hz power available from any North American
A complete discussion of AC circuits must involve the
"inertial" effect of inductance, but a useful
introduction can be developed using only
capacitance and resistance .
We begin by picturing a generic series- circuit driven by a
It is convenient to use the complex form21.2for calculations;
just remember that none of the actual physical quantities
like current or voltage will actually have a measurable
The voltage amplitude is taken to be pure real.
An circuit driven by an AC voltage.
- . . . outlet.21.1
- In Europe and much of Asia
the standard is 50 Hz.
- . . . form21.2
signifies "the real part of" a complex quantity like
The imaginary part is written (e.g.)
- . . . part.21.3
- Let me know if you invent
an imaginary voltmeter!
Jess H. Brewer -
Last modified: Mon Nov 16 18:06:18 PST 2015