6.1 Generation of Electricity

Current is divided into two types, which are

• Induced and direct current

• Induced and alternating current

• Direct and alternating current

• Alternating and electrical current

Diagram shows one electrical appliance used at home.

What’s the type of current used in that appliance?

• Alternating current

• Direct Current

• Induced Current

• Electrical Current

Which of the following diagram is the sources of alternating current?

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In your opinion, what type of current is produced by the generator at a power station?

• Direct current

• Electrical Current

• Induced Current

• Alternating current

Diagram shows a Cathode Ray Oscilloscope (CRO).

CRO can show the differences in current in terms of the following except

• Graph shape

• Direction of current

• Voltage variation

• Current resistance value

What’s the function of time base knob on CRO?

• Controls the movement of the light spot

• Adjusts the position of the light spot on the horizontal axis

• Adjusts the position of the light spot on the vertical axis

• Changes the magnitude of the height of the light spot

Diagram shows a prominent figure in the field of electric current.

What’s he done?

• Expanded the use of direct current

• Invented the use of alternating current

• Invented direct current

• Applied solar energy in villages

What’s the suitable method used in rural area that doesn’t have electricity supply?

• Solar Energy

• Mega hydroelectric energy

• Nuclear energy

• Natural gas energy

Diagram shows alternating current tested using CRO.

What image is displayed on the screen if the power supply terminals are reversed?

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Diagram shows one innovation created on this era.

What energy transformation is involved?

• Electrical Energy —> Kinetic Energy —> Heat Energy

• Electrical energy —> Radio wave energy —> Kinetic energy

• Electrical energy —> Radio wave energy —> Electrical energy

• Electrical energy —> Heat energy —> Light energy