My performance,class 7, Ch - Electricity

Electricity Quiz

1. What is the function of a switch in an electric circuit?

To open or close the circuit To increase resistance To decrease voltage To store electrical energy

2. What is the unit of electric current?

ampere volt ohm watt

3. What is the primary function of a dry cell in a circuit?

To provide electrical energy To decrease resistance To open the circuit To increase current

4. Which circuit connection is used in household wiring?

Parallel Series Short Open

5. What is the purpose of a fuse in an electric circuit?

To prevent overloading To increase resistance To store energy To decrease current

6. What is the SI unit of potential difference?

Volt Ohm Ampere Watt

7. If one bulb goes out in a parallel connection, what happens?

Other bulbs remain lit All bulbs go out Circuit stops working Voltage increases

8. What is the role of a key in an electric circuit?

To open or close the circuit To increase resistance To measure current To decrease voltage

9. What is the effect of increasing the number of cells in a series connection?

Increases voltage Decreases voltage Voltage remains constant Decreases current

10. What type of connection is used in a flashlight?

Series Parallel Short Open