Magnetism
Electricity and Magnetism
Producing an Electric Current
Electric Units
HODGE PODGE
100
The regions of a magnet where magnetic force is the strongest.
What are poles?
100
Moving charges like those in an electric current produce _____ _____.
What are magnetic fields?
100
___ and ___ are the two types of electric current.
What is AC and DC?
100
The unit for voltage.
What is VOLTAGE?
100
Used to protect your house from electrical overloads? (Two answers.)
What are FUSE BOXES and CIRCUIT BREAKERS?
200
A _____ is a small ar magnet that can rotate freely.
What is a compass?
200
A _____ is a temporary magnet made by wrapping a current carrying wire around an iron core.
What is an electromagnet?
200
___ and ___ are the two types of transformers used to transmit electricity to our homes.
What are STEP UP and STEP DOWN?
200
I = V/R
What is Ohm's Law?
200
The two types of batteries?
What is a WET CELL and a DRY CELL?
300
The Earth's magnetic north pole and geographic north pole are located ________ km apart in northern Canada.
What is 1500 km?
300
Increasing the current to an electric motor increases the ____ of the motor.
What is speed?
300
A large wheel that rotates to turn a generator.
What is a turbine?
300
The unit for electrical current?
What is AMPERES?
300
A buildup of electric charges on an object.
What is STATIC CHARGE?
400
The three magnetic materials discussed in class.
What Iron, Cobalt, and Nickel?
400
A _____ is a device often found in gauges on a car that uses and electromagnet to measure electric current.
What is a galvanometer?
400
Producing an electric current by rotating a wire loop inside a magnetic field.
What is Induction?
400
The unit for electrical resistance.
What is OHMS?
400
Direct Current always flows in this direction.
What is - to + ?
500
Groups of atoms with aligned magnetic poles
What are magnetic domains?
500
A _____ is the device in an electric motor that causes the direction of the current to switch back and forth.
What is a commutator?
500
In North America, alternating current changes direction approximately ___ times each second.
What is 120?
500
The unit used to measure the power used in our homes.
What is KILOWATT-HOURS?
500
Protecting your house from lightning (lightning rod) or running a safety wire to protect a circuit in your house.
What is GROUNDING?
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