Given the readings taken from the circuits you built, what did you notice about the

potential differences measured in the series circuits? parallel circuits?

Kirchhoff's Voltage Laws

In a series circuit the voltage across the source is equal to the sum of the voltages

across the loads.

In a parallel circuit the voltage across parallel branches is equal.

Kirchhoff's Current Laws

What did you notice about the current measured in the series circuits? parallel circuits?

In a series circuit the current is the same at all points in the circuit.

In a parallel circuit the total current flowing into a junction is equal to the total current

flowing out.

What did you notice about the resistance measured in the series circuits? parallel

circuits?

Ohm's Law

V = I R

Using Kirchhoff's Laws and Ohm's Law we can determine relationships for resistance in:

series circuits: parallel circuits:

Kirchhoff's Laws and Ohm's Law

Determine the missing value(s) in each circuit.

Once you have completed the worksheet, determine all the unknown values of this circuit.