Questions:

1. Describe the energy changes that occur in the following devices. Start each with electricity turns into ...
   1. For a smart phone
   2. For an electronic keyboard
   3. For an electric stove top
   4. For a fan

Problems:

1. The current through a toaster plugged into a 120 V outlet is 8 A. What is the power of the toaster?

1. A lightbulb draws 1.2 A of current from a 120 V outlet. What is the power of the lightbulb?

1. A stove uses 0.75 A of current when drawing from a 220 V line.
2. How much power is the stove using?
3. If the stove is on for 15 minutes, How much energy does it use?

1. A car's 12 V battery is connected to the car radio. The radio is drawing 4 A of current.
   1. What is the power setting of the radio?
   2. How much energy does it use if it is on for a half hour?

1. A 400 W clothes dryer is connected to a 220 V line.
   1. How much current does it draw?
   2. If it is on for 45 minutes, how much energy does it use?

1. A flashlight uses two 1.5 V batteries.
   1. If the bulb is 6 W, how much current goes through the bulb?
   2. How much energy is used if the flashlight is on for 15 minutes?