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Insulator and Conductor
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Compared to copper , why Is Aluminium not a very good conductor?
It has lower conductivity.
Why is it important to have ceramic insulators between two different metal conductors??
To help prevent electricity from flowing between the different parts
What do we call people who work with electricity and fix wiring in our houses and other buildings?
Electricians
Why are our bodies also good conductors?
Electric current can easily flow through it.
Rubber gloves and shoes will protect you from mains electric current, but not from...
Lightning
Why is gold and silver only used sometimes unlike copper?
They're expensive.
Name one of the best conductors?
Copper
What do we call the ability to conduct?
Conductivity
Name three functions of a switch
It controls the flow of electric current , it's used to turn electrical devices on and off , it's a safety measure in electric circuits
Name two functions of a battery
Power source , electrical energy storage
Name three functions of an electrical wire
Conduct electricty ,connect components , transfer energy
Draw a circuit with 3 cells, a bulb and an open switch
draw
Draw a circuit with one cell , 2 bulbs and a closed switch
draw
Does it matter where in the circuit we position the components?
The sequence of the components in a simple circuit like the one used here is not important.
What are the conditions for the bulb to light up? Name three
The circuit should have at least all three components.The circuit should be closed. The connections should provide electrical contact (metal on metal).
What is the difference between the way we can get an electric stove and a cellphone to work?
1 cellphone works from a rechargeable battery. The stove is connected to the mains supply.
How does your cellphone make use of electricity?
We use electrcity to charge the battery it uses.
Is glass a conductor of electricity?
No
Does pure water conduct electricity?
No
If mains electricity flows through your body, you will get an ________________.
electric shock
A unit to measure the strength of electricity.
Volt
Why are insulators important in an electrical circuit?
They make the circuit safe to touch
Would this be a conductor or an insulator? Why?
Conductor, because it's metal!
Why is rubber good to use around a wire?
It is an insulator, it does not allow electricity to pass through it.
Which item on this list does not belong and why? Steel can, rubber tire, copper coin, aluminum wire, gold ring.
Rubber tire, it is an insulator and everything else is a conductor.
Objects made of ____________ are used as conductors.
metal
Why are metal wires covered in a rubber coating?
Because rubber is an insulator
Which of these materials does not conduct electricity? Iron, Wood, Copper, Silver
Wood
What is a conductor?
An object that allows electricity to flow freely.
What is an insulator?
An object that DOES NOT allow electricity to flow freely
Which would be the best conductor of electricity? Air, Cork, Water, Silver
Silver


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