Circuit Stuff

This week in physics we have been doing a lot of work finding resistances, currents, and voltages in "inception" circuits. These are circuits that have resistors in both series and parallel, which makes finding currents and voltages more difficult to find. We have learned to find resistance, current, and voltage in two ways: with calculations or with a multimeter.
To find pretty much anything in a circuit, the equation V=IR (Ohm's law) can be used, as long as you know two things. For example, if you have a series circuit with one resistor of 2 ohms  and a 1.5 volt battery, then we would know that the current of this system is 3/4 A.
V=IR
1.5=A(2)
A=3/4
This finds the theoretical answer, but to find the real values of V, I, or R, a multimeter is more useful.
Using a multimeter, we can find any of these values using special probes that read voltage, resistance, and current.

Above is a picture of a multimeter and an "inception" circuit, complete with resistors in series and parallel.