What%20are%20conductors%20and%20insulators? - PowerPoint PPT Presentation
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What%20are%20conductors%20and%20insulators?
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What are conductors and insulators? What is a conductor? A conductor is something which allows electricity to flow through. An example of a conductor is: Scissors ... – PowerPoint PPT presentation
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Title: What%20are%20conductors%20and%20insulators?
1
What are conductors and insulators?
2
What is a conductor?
- A conductor is something which allows electricity
to flow through. - An example of a conductor is
- Scissors
- Paper clip
- Aluminum foil
- Iron
- Steel
- Copper
3
What is a Insulator?
- An insulator is what makes electricity from not
flowing - Examples of insulators are
- Cotton
- Paper
- Plastic
- Glass
- Rubber
4
These are pictures of conductors and Insulators
Insulators
Conductors
5
Now its your turn
What is a circuit tester?
Use of a circuit tester To test whether the
material is a good electrical conductor.
Example of a circuit tester
6
Inquiring Minds Want to Know! Conductor or
Insulator? That is the question!
- Now take the bag of materials and spread them out
in front of you. - Draw the following table in your journal.
- As you test each item, record whether it was a
conductor or and insulator with a
Item Conductor Insulator Did the bulb light?
Spoon
Paper clip
pencil
Rubber band
eraser
Foil
Nail
coin
7
How to use a circuit tester?
Step 1 Set up the circuit tester as shown above.
Step 2 Place the object between the open ends
of the wire.
8
How to use a circuit tester?
- If the bulb lights up, it means the material
allows electric current to flow through the
closed circuit. - The brighter the bulb, the better the conductor
of electricity is the material.
9
Conclusions
- Conductors allow electricity flow through them.Â
Conductors are materials that can carry
electricity - they conduct electricity. Metal
materials such as copper, iron, steel and
aluminum are all good conductors of electricity. - Insulators do not allow electricity to flow
through them. Materials such as wood, plastic,
rubber and glass do not carry electricity and are
called insulators they dont conduct
electricity.
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