### Calculating circuit values

One thing you may need to do is calculate what components you might need to make a circuit work.

The one formula you will need to remember is Ohm’s Law is E=I/R where E = electromagnative force (voltage), I = current (amps),
and R = Resistance (ohms).
You can of course move these variables around if you need to calculate I or R of the circuit:
I = E/R
R = I/E

There are some basic principals to constructing a circuit you will need to follow, and depending on which type of circuit
you are making, the rules are slightly different.
Here are the basics of each circuit type.