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- 1. Multiple Choice
Why is it unsafe to switch on a bulb with wet hands?
The switch blows off.
It can give a shock.
The bulb gets fused.
The wires are disconnected.
- 2. Multiple Choice
Why do electricians wear gloves made of rubber?
It is soft.
It is waterproof.
It is an insulator.
It is inexpensive.
- 3. Multiple Choice
If we touch a a live wire carrying current, we get a shock. This is because our body is a/an
conductor of electricity
insulator of electricity
source of electricity
None of these
- 4. Multiple Choice
Which among the following metal is used for making electric wires?
Graphite
Iron
Copper
Zinc
- 5. Multiple Choice
Why is tungsten used as a filament in electric bulbs?
It is non luminous
It is a soft metal
It has a high melting point
It has a low melting point
- 6. Multiple Choice
Which of the following does NOT conduct electricity?
Aluminium
Salt solution
Silver
Ceramic articles
- 7. Multiple Choice
Why is a switch used in a circuit?
To complete or break a circuit
To save energy
To prevent electric shocks
To make the bulb glow easily
- 8. Multiple Choice
The bulb in a circuit glows when electric current
flows through the glass covering
flows through its filament
stops flowing to the bulb
flows into the air through the bulb
- 9. Multiple Choice
What are the two places on the battery to which the wires can be attached called?
Switches
Filaments
Insulators
Terminals
- 10. Multiple Choice
A cell, a conducting wire and a bulb are used for constructing a simple electric circuit. What are they called?
Consumers
Connectors
Components
Sources
- 11. Multiple Choice
Which of these will generate electric current when kept in sunlight but not in the dark?
Solar cell
Car battery
Dry cell
Button cell
- 12. Multiple Choice
What does a battery contain?
A minimum of three terminals
A minimum of two terminals
A cell and a switch
A bulb and a switch
- 13. Multiple Choice
Tube lights are preferred to bulbs mainly because
Bulbs gives more light
Bulbs get fused easily/frequently
Bulbs are cheaper
Bulbs produce shadows
- 14. Multiple Choice
Which of the following statement is incorrect?
A dry cell produces a small amount of electrical energy
All dry cells are rechargeable
A dry cell is used in TV remotes
There are two terminals in a battery
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