Uses of Electricity Quiz

Which of the following is NOT listed as a use of electricity under the 'Cooking' category?

• Electric kettle

• Mixer grinder

• Television

• Microwave

Nihal and his classmates organized the uses of electricity under different headings. Which heading would a 'mobile phone' fall under?

• Communication

• Lighting

• Heating and Cooling

• Transportation

What are the two terminals of an electric cell called?

• Positive and Negative

• North and South

• Left and Right

• Up and Down

What is the term used for a single cell that powers devices like mobile phones?

• Battery

• Lamp

• Filament

• Terminal

What is the glowing thin wire inside the glass bulb of an incandescent lamp called?

• Filament

• Insulator

• Metal case

• Thick wire

Which part of the incandescent lamp glows when the torch is switched on?

• The thin wire inside the glass bulb

• The metal case

• The thick wire

• The insulator

If a torch has a lamp that cannot be taken out, what does this indicate about the lamp?

• It is a different kind of lamp fixed in the torch

• It is an incandescent lamp

• It is a battery

• It is a filament

How can you identify the positive terminal of an LED?

• It is attached to the longer wire.

• It is attached to the shorter wire.

• It is always colored red.

• It is always colored green.

Why is it necessary to remove about 1 cm of plastic covering from both ends of each wire when constructing an electric circuit?

• To expose the metal for proper connection

• To make the wire shorter

• To change the color of the wire

• To make the wire lighter

After connecting the lamp and cell, what should you do if the lamp glows?

• Colour the glass bulb yellow

• Disconnect the wires immediately

• Throw away the lamp

• Replace the cell