1. Circuits with more than one resistor, then Watt happens? Series and Parallel are the 2 ways of connecting multiple resistors

2. Series Circuits In a Series Circuit there is only one path for charges to flow so the current (I) is the same everywhere.

3. Series Circuits The total Resistance is the sum of the 2 resistor values: R total = R 1 +R 2 To Find the Current (I), use I = V/R total

4. Series Circuits The battery puts in Volts (energy = skittles) and each of the resistors uses up some of the Volts. Together the 2 resistors use up the total Volts that the battery puts in.

5. Series Circuit

6. Series Circuit

7. Parallel Circuit In a parallel circuit both resistors get the same amount of voltage as the battery puts in.

8. Parallel Circuit Now moving charges (current) has a choice of which path to take. The current (I) must be conserved so I1 =I2 + I3

9. Parallel Circuit Rule for finding the total resistance in parallel: 1/R total = 1/R 1 + 1/R 2 Use this total resistance to find the current (I) supplied by the battery

10. Parallel Circuit