9. What is the source of electricity in a simple electric circuit?

A. wet cell B. body cell C. dry cell D. electric cell

10.Which of the following is NOT a component of an electric circuit?

A. power supply B. resistance C. switch D. insulator

11.What component does this circuit symbol represent?

A. dry cell B. buzzer C. capacitor D. switch

12.Which device protects the circuit from damage if a short circuit occurs?

A. battery B. fuse C. bulb D. electromagnet

13.The following shows how electricity is used except one. Which one is it?

A. Light bulbs use electricity to produce heat.

B. Radio uses electricity to produce sound.

C. Oven toaster uses electricity to produce heat.

D. Electricity can be produced by transforming mechanical energy into electrical energy.

14.Electric energy is commonly used because___

A. it is clean. B. it can be changed into other forms of energy.

C. it is cheap. D. it is the only available energy.

15.What happens when the switch is on?

A. Electricity flows in a complete circuit. B. Electricity flown in an open circuit.

C. Electricity does not flow in a complete circuit. D. Electricity stops flowing


15 points po :)