1. The unit of electric power is the ________________.

2. In your own words, explain the relationship among power, voltage, and current.

3. Do we pay the utility company for our power use or our energy use? Explain.

4. Explain the relationship among power, voltage, and resistance.

5. If the current in a circuit is increased by a factor of 2 and the voltage stays constant, how does the power change?

6. If the resistance in a circuit decreases by a factor of 2 and the voltage stays constant, how does the power change?

7. If the voltage and current in a circuit each decrease by a factor of 2, how does the power change?

8. If the current increases in a circuit by a factor of 2 and the voltage stays constant, how would the cost of operating the circuit change?