Electrical Systems and Control

1. 1. What is the basic unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

2. 2. Which component in an electric circuit is used to resist the flow of current?

• Capacitor

• Resistor

• Inductor

• Battery

3. 3. What device converts electrical energy into light?

• Motor

• Transformer

• Light bulb

• Diode

4. 4. In a series circuit, if one component fails, what happens to the entire circuit?

• The circuit continues to work.

• Only that component stops working.

• The entire circuit stops working.

• The lights get brighter.

5. 5. What is the purpose of a switch in an electrical circuit?

• To increase voltage

• To control the flow of current

• To store energy

• To measure resistance

6. 6. Which of the following materials is a good conductor of electricity?

• Wood

• Plastic

• Copper

• Glass

7. 7. What is a function of a battery in a circuit?

• To increase resistance

• To convert energy into motion

• To supply electrical energy

• To control the current flow

8. 8. Explain how a simple circuit works and describe its main components.

9. 9. Discuss the role of insulators in electrical systems and give examples of common insulators found at home.

10. 10. Why is it important to follow safety precautions when working with electricity? Provide examples of what could happen if precautions are not taken.