chinjiayao

electricity used to provide At night Generators
power for markets, convert the
Electricity is electronic vendors use chemical energy
the set of generators to in gasoline or
physical devices such as obtain power diesel into large
phenomena flashlights, amounts of
associated A battery is a device electrical energy.
with the mobile phones composed of one or
presence and and electric more electrochemical Dry betteries
motion of cars. convert chemical
matter that cells,
has a property energy into a
of electric small amount of
charge. electrical energy

Dry battery is
small and easy
to carry.

When the Generator Suitable for use
battery is in alarm clocks,
powered, the BATTERY Electricity DRY CELL flashlights,
positive pole is remote controls
the negative and many more.
pole and the
negative pole is Small generator Small generators
the negative convert kinetic
energy into
pole. electrical energy
through magnetic
Hydroelectric force.
power station is
the application Hydroelectric Solar cell Most small generators appear in
of water power power station
bicycles.
to push water
wheels to When the bicycle
generate is running, the
electricity small generator

Use cables leaning on the tire
to transmit will rotate to
electricity
to homes, provide power for
the lights.
schools,
factories
many more.

Suitable for use Solar cells
in calculators, convert light
water heat ers, energy into
street lights electricity

and many FINANC
more.

To make a complete circuit, four original circuit parts are required.
There are dry batteries, light bulbs, wires and switches to form a
complete circuit. In a complete circuit, the circuit must be able to
smoothly pass through each circuit element to make the bulb light up.

Symbol of the original circuit

Complete circuit element symbol element symbol
4.
1.

dry cell (one) electric wire

2. 5.

dry cells (two) Switch (pull down)

3. 6.

light bulb switch(pull up)

Series circuit Parallel circuit

Parallel circuit

Series circuit

In a series circuit, the
circuit has only one
channel. When all the
switches are pressed, all
circuits will light up
together; but when one of
the switches is pulled up, all
the light bulbs will go out
together.

Parallel circuit

In the parallel circuit, each
bulb has its own switch
control. When one of the
switches is pressed or
pulled, only the bulb
controlled by the switch
will turn on or off, and the
other bulbs will not be
affected.

SUMMARY Solar Series
energy circult
Dry cell

Generator Power Battery Parallal
Supply circult

Circult
Type

Hydroelectric ELECTRIC
power
station

Light Switch
bulb
Dry cell Symbol of Wire
the original

circuit