23.3. Electric Circuits http://www.ck12.org
Lesson Review Questions
Recall
- Identify the parts of an electric circuit.
- What is electric power?
- What variables determine the amount of electrical energy an appliance uses?
- Identify an electric safety feature and describe how it works.
- List three tips to reduce the risk of injury or fire from electricity.
Apply Concepts
- Draw a simple electric circuit that includes a battery, light bulb, and switch. Use arrows to show the flow of
electrons through the circuit. - What is the power of an electric device that is connected to a 12-volt battery if the circuit is carrying 3 amps
of current?
Think Critically
- Compare and contrast series and parallel circuits.
- Explain how a short circuit occurs.
Points to Consider
In this lesson, you read that electric devices convert electrical energy to other forms of energy. For example, a
microwave oven converts electrical energy to electromagnetic energy in the form of microwaves. A blender converts
electrical energy to sound energy and the kinetic energy of the whirring blades.
- Do you think all electric devices convert electrical energy to other forms of energy?
- Computers are familiar electric devices. Do you know how they use electric current?