1. Comprehension Check
You have three 75Ω resistors; what is the effective resistance if:
They are placed in series
They are placed in parallel
Find the effective resistance of the following circuit

2. Comprehension Check
225Ω
25Ω
10.1Ω

3. Internal Resistance, Power and Energy
Physics 12

4. Internal Resistance
While it is often easy to treat a power supply simply as a voltage, this is not actually the case
Rather, the power supply is a somewhat complicated device that can be simplified to a voltage and internal resistance

5. Internal Resistance
The voltage of a power supply should be treated as follows to account for the internal resistance of the power supply:

6. Electric Power
Based on voltage and current, use unit analysis to determine an equation to calculate the power produced by a resistor

7. kW-h?
Nova Scotia Power sells power to consumers as kW-h; 1kW-h sells for $
What is a kW-h?
If you are to run W light bulbs for 8.0 hours a day, how much would this cost?

8. Practice Problems Page 731 Page 737 Page 740 Page 744 38-39 40-42
43-45
Page 744
46-50