Mention the way through which an electric cell can produce electricity

2

(a)

A fused bulb does not glow. Why? 

2

(a)

Mention how many types of terminals of an electric cell are there.

2

(a)

Give name of portable electric lamp that works on cells?

2

(a)

What does the positive terminal of dry cell consist of?

2

(a)

We should use plastic gloves for operating electrical devices. Explain why

2

(a)

Give the examples of some gadgets which use electricity.

2

(a)

The moment you switch on the torch, which part of the bulb glows?

2

(a)

The electric cell and the bulb both have two terminals. Explain why

2

(a)

Paheli has another arrangement of the cell and the bulb. Will the torch bulb glow in the following arrangement?

2

(a)

Complete the following table. WIll bulb glow or not?

Object used in place of the switch	Material is made of	Bulb glows? (Yes/No)
1.Keys 2.Eraser 3. Scale 4. Matchstick 5. Glass bangle 6. lron nail 7. Notebook	Metal Rubber Plastic Wood Glass Metal Paper

2

(a)

What are insulators? Give one example.

2

(a)

Name some of the devices in which electric cells are used.

2

(a)

How can you explain that the human body is a good conductor of electricity?

2

(a)

Why is it compulsory to keep a fire extinguisher near the meter room of housing societies?

2

(a)