Page 68 - Ai Robogenius

2. Choose the correct example of a conductor. COMPETENCY-BASED QUESTIONS

(i) Plastic (ii) Rubber
1. Aarush connects a metal and a plastic spoon to a battery and a bulb to test his

(iii) Copper (iv) Wood circuit. The bulb glows when he uses the metal spoon but does not glow with the

3. Select the circuit where if one light stops, all lights stop. plastic one. Why does the bulb glow only with the metal spoon?
2. Riya notices that at home, each light and fan can work even if one switch is off.
(i) Parallel circuit (ii) Open circuit
She wonders how that happens. What type of circuit is used in Riya’s house?
(iii) Series circuit (iv) Mixed circuit

4. Mark the material that does not let electricity pass through it.

(i) Steel (ii) Aluminum

(iii) Wood (iv) Copper

5. Which of these helps electricity move from the battery to the bulb?

(i) Wires (ii) Switch

(iii) Insulator (iv) Plastic

B. Write ‘T’ for true and ‘F’ for false.

1. Rubber, glass and wood are good insulator.

2. Without a battery, the bulb, fan or toy can still work.

3. Electricity can flow only when the circuit is complete.

4. A circuit is a broken path for electricity to travel.

5. The bulb shows that the circuit is working when it lights up.

C. Fill in the blanks using the given hints:
Hints
1. In a parallel circuit, circuit parts are connected in
Switch
paths. Separate

2. A checks the power of electricity. Voltmeter
3. The shows the name of each part. Electricity
Label
4. The bulb lights up when moves through the

circuit.
5. A helps to start or stop the flow of electricity.

AI RoboGenius - I
66