4S Ch. 8 Electricity and Magnetism

1. Which is conductor?

• a. a material through which an electric charge can move easily
• b. a material through which an electric charge moves slowly
• c. an electric charge in motion

2. Which is electric current?

• a. a material through which an electric charge can move easily
• b. a material through which an electric charge moves slowly
• c. an electric charge in motion

3. Which is insulator?

• a. a material through which an electric charge can move easily
• b. a material through which an electric charge moves slowly
• c. an electric charge in motion

4. What is the difference between a parallel circuit and a series circuit?

• a. parallel circuit has one path
• b. parallel circuit has no paths
• c. parallel circuit has two or more paths

5. What does the plastic over the metal wires in a circuit do?

• a. insulator that keeps electric current flowing
• b. conductor that keeps electric current flowing
• c. it doesn't do anything

6. Which is filament?

• a. a thin-coiled resistor that transforms electrical energy into light energy and heat
• b. a force that acts when two surfaces rub together
• c. an object that uses the energy in a circuit

7. Which is friction?

• a. a thin-coiled resistor that transforms electrical energy into light energy and heat
• b. a force that acts when two surfaces rub together
• c. an object that uses the energy in a circuit

8. Which is resistor?

• a. a thin-coiled resistor that transforms electrical energy into light energy and heat
• b. a force that acts when two surfaces rub together
• c. an object that uses the energy in a circuit

9. A violin transforms electrical energy into sound energy.

• True
• False

10. Charges exit a circuit with less energy than they had when they entered the circuit.

• True
• False