Form 3: Chapter 6

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Form 3: Chapter 6

Electricity and Magnetism

Name: *

An energy source that can be replenished continuously and will not be used completely. *

1 point

renewable energy source

non-renewable energy source

An energy source that cannot be replenished continuously and will be used completely. *

1 point

renewable energy source

non-renewable energy source

Classify the following into renewable and non-renewable energy sources. *

8 points

Renewable

Non-renewable

Nuclear energy

Coal

Wind energy

Geothermal energy

Solar energy

Natural gas

Hydro energy

Petroleum

Electric current flows in one direction only. *

1 point

Direct current

Alternating current

Electric current that its direction continuously changes. *

1 point

Direct current

Alternating current

Match the statements below correctly. *

3 points

Generator

Transformer

Cathode ray oscilloscope

Used to increase or decrease the voltage of alternating current in the transmission and distribution of electrical power

Used to show the differences in graph, current direction and change in voltage for direct current and alternating current

Used to generate electric energy

Input voltage across the primary coil is higher than the output voltage across the secondary coil. *

1 point

Step-up transformer

Step-down transformer

Input voltage across the primary coil is lower than the output voltage across the secondary coil. *

1 point

Step-up transformer

Step-down transformer

The primary coil has less number of turns compared to the secondary coil. *

1 point

Step-up transformer

Step-down transformer

The primary coil has more number of turns compared to the secondary coil. *

1 point

Step-up transformer

Step-down transformer

Match the following statements correctly. *

3 points

Main fuse

Main switch

Circuit breaker

Breaks circuit if the current supply is too big

Breaks the power supply from the main power

Controls the current supply to all circuits at home

Match the following correctly. *

2 points

Single phase wiring

Three phase wiring

Used by rural housing areas

Used by commercial and industrial areas

Classify the following appliances correctly. *

4 points

2-pin plug

3-pin plug

Radio

Refrigerator

Oven

Electrical mosquito repellent

Match the colours of the wires correctly. *

3 points

Neutral wire

Earth wire

Live wire

Blue

Brown

Yellow and Green stripes

A Miniature Circuit Breaker (MCB) is used in place of _______ in some newer electrical appliances. *

1 point

fuse

earth wire

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