Electromagnet
Where will you find electromagnets?
Behind a cover usually. Unseen.
True or False: If the pointer is on 0 --> a lot of electricity is being generated.
False (no electricity is being generated)
Which one is the best for electricity?
Conductors --> because electricity can flow through it.
Tungsten is a good...?
Resistor.
In what unit do we measure electricity consumption?
WATTS
True or False: When you wind a wire into a coil - the magnetic field is weaker?
False (it's stronger)
Michael Faraday
Examples of Conductors:
Silver, iron, brass, mercury, water, gold, copper, aluminum, steel, bronze, graphite, concrete.
Nichrome wire is made of?
Nickel & chromium
Reading an electrical meter: If point is between 0 & 9, which one do you write down?
How do you make a simple electromagnet?
With what device do you measure Electromagnetic induction?
Voltmeter.
Examples of Insulators:
Glass, oil, fibreglass, ceramic, cotton, plastic, diamond, rubber, asphalt, porcelain, quartz, paper, air.
Example of Nichrome wire:
Electrical meter: If pointer is between two numbers, which one do you write down?
True or False?
When an electric current flows through a wire - a electric current is produced around it.
False (a magnetic field is produced)
What happens when you hold the magnet inside the coil without moving it?
NO CHARGE.
Definition for Insulators.
Materials that do NOT allow electricity to flow through them.
3 Reasons why it is important to be energy efficient:
Saves money, decrease use of non-renewable resources, & reduce air pollution.
Definition of Kilowatt hour:
The amount of electricity it takes to power a device that uses 1000 watts of electricy for one hour.
Definition of a electromagnet:
A magnet whose magnetic field is produced by an electric current.
Which things do you need to make a product, to measure Electromagnetic induction?
Magnet, coil of wire, and a voltmeter.
Definition for Conductors.
Substances that electricity can FLOW through.
Definition of Resistors:
Substances that are poor conductors of electricity.
Does every house have a electrical meter?
And where is it located?
Yes.
On an outside wall.