Electricity and Magnetism 1
Electricity and Magnetism 2
Electricity and Magnetism 3
Electricity and Magnetism 4
Electricity and Magnetism 5
100
Where is the force of attraction strongest on a magnet
At the poles
100
Can all metals be attracted to a magnet?
No
100
Glass is a good conductor of electricity.
No
100
If the circuit is open that means the light is off? true or false
True
100
The same magnetic poles do what?
Repel
200
This picture shows...
Repulsion (repel)
200
Electric charges that are alike they____ and electric charges that are different they_____
Repel, attract
200
Direction of electrons flow from
negative to positive
200
When an object has too many electrons it has a ______________ charge
Negative
200
The area around a magnet is known as..
magnetic field
300
A nail wrapped in copper attached to a battery
Electromagnet
300
The current that flows in one direction.
Direct Current
300
The current that flows in many directions.
Alternating Current
300
If a magnet is broken in half, what poles would each piece have.
North and South
300
If you rub a balloon on your hair _______________ move from your hair to the balloon.
Electrons
400
A circuit with two or more branches is a...
Parallel Circuit
400
A circuit with one branch is a...
Series Circuit
400
what is a magnetic domain
A region in which many atoms have their magnetic fields aligned
400
How do permanent magnets lose their magnetism?
When they are dropped or banged enough to bump their domains.
400
What are ferromagnetic materials
Materials that can be magnetized because it contains magnetic domains
500
If you rubbed two balloons on your hair what will happen if you put them close together?
They will push (repel) away from each other.
500
Walking across a carpet you get electrons all over your body by conduction, friction or induction.
friction
500
What is a solenoid
A coil of current carrying wire
500
Which two of these have fields that can both attract and repel?
gravitational, tension, electric, magnetic
Electric and Magnetic
500
TWO uses of magnets
1. Magnets are used for constructing magnetic needles and mariner's compasses
2. They are used to seperate iron filling from other solid mixtures