Sources of Electrical Energy

5.1 Sources of Electrical Energy

Energy is the ability to do work. There are various type of energy and electrical energy is one of them. Electricity is a phenomenon that resulted from the existence and flow of electrical charge.

5.1

Sources of Electrical Energy

Electrical energy is invisible but its function can be observed all the times.
Electrical energy is used to produce light, heat, sound and to move things.
There are 6 electrical enery sources, namely:

Hydroelectric Power
Solar cells
Dry cell
Dinamo
Accumulator
Generator

Hydroelectric Power

Hydroelectric power stations use kinetic energy of water to move the water turbine and generate electricity
Hydroelectric power stations use the kinetic energy of water (released from a damn or waterfall) to turn the water turbine and generate electricity

Solar cell

Solar cells convert sunlight energy into electrical energy
Solar cells are used in tools such as satellites and calculators

Dry cell

Dry cells store chemical energy
Chemical energy is converted into electrical energy to move tools such as toy cars
Dry cells are used because of their small size and easy to carry

Dynamo

Dynamo is a magnetic rotation in a loop of wire that converts kinetic energy into electrical energy
A dynamo is mounted on the bike to turn on the lights on the bike
When the bicycle tire rotates, the small wheels on the dynamo also rotates

Accumulator

Accumulator converts chemical energy into electrical energy
Accumulator is used to move motor vehicles such as cars

Generator

Penjana menukarkan tenaga kimia daripada bahan api fosil kepada tenaga elektrik

Quick Notes