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Electricity

Last updated 3 months ago

15 questions

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Question 11

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Question 13

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Question 14

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Question 15

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What is the basic unit of electricity?

Watt

Ohm

Ampere

Joule

Electric current travels at the speed of light.

True

False

Which of these is a good conductor of electricity?

Plastic

Rubber

Copper

Wood

Which appliances work by using electricity?

Refrigerator

Television

Bicycle

Hammer

What does a switch do in an electrical circuit?

Changes the voltage

Controls the current

Increases resistance

Opens or closes the circuit

Which are sources of electrical energy?

Sun

Wind

Coal

River

All materials conduct electricity.

True

False

What does a resistor do in a circuit?

Increases the current

Reduces the current

Multiplies the voltage

Divides the voltage

Which are dangers of electricity?

Fire

Electrocution

Air pollution

Water pollution

The terms 'AC' and 'DC' refer to the direction of electric current.

True

False

Who is known as the 'father of electricity'?

Nikola Tesla

Michael Faraday

Thomas Edison

Benjamin Franklin

Which elements are considered good electrical conductors?

Gold

Copper

Iron

Silicon

Batteries convert chemical energy into electrical energy.

True

False

In a filament bulb, what provides resistance to the flow of electricity?

Metal cap

Base

Filament

Glass bulb

What are insulators?

Wool

Wood

Glass

Iron