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Using electricity :red_flag: :star::+1:, when positive and negative ends…
Using electricity :red_flag: :star::+1:
Variables that affect brightness of bulb
arrangement of batteries
Batteries in Parallel
requires less power to function
when positive and positive ends connect and negative and negative ends connect, it is parallel
Comparison Table
Batteries in series
number of bulbs
When more bulbs added in parallel, brightness will remain the same
When more bulbs added in series, bulbs will turn darker
number of batteries
more batteries in series, bulbs in circuit shine more brightly
When too much batteries, bulb might blow
When one bulb blows, others will not work
More batteries in parallel, bulb would not shine brighter nor darker
arrangement of bulbs
Comparison Table for Bulbs in parallel and in series
Why should we use electricity safely
Electricity can be dangerous
Can cause fire or electric shocks
Causes can be using it with wet hands, handling damaged insulation, or overloading powerpoints
To use it safely, we have to...
Do not connect too many appliances into one socket
make sure wires not exposed
never touch with wet hands
Use circuit breakers or fuses
Do not repair appliances yourself
How to use electricity wisely
To conserve electricity
turn off appliances when not in use
Use energy-saving bulbs
Sleep with lights off
refrigerator door must be close after opening it :warning:
Use fan instead of AC
Electricity is made from natural resources such as coal, oil and natural gas.
The faster we use them, the faster it will run out
We save money by conserving electricity
when positive and negative ends connect, it is series
Torch or Radio