Show:
Magnets
Formulas
Electricity
Motors and Generators
Transformers
100

The interaction of magnetic poles with each other.

What is like poles repel and unlike poles attract?

100
The formula for Ohm's Law.
What is Resistance = Voltage/Current?
100
The two types of electricity.
What are static electricity and current electricity?
100
The energy conversion that takes place in an electric motor.
What is electrical energy to mechanical energy?
100
The two types of transformers.
What are step-up and step-down?
200

Where the magnetic effect of a magnet is the strongest.

What is at the poles?

200
The formula for electrical power.
What is Power = Voltage x Current?
200
The three things needed for a complete circuit.
What are an energy source; conducting wires and a switch; and a device run by electrical energy?
200
The energy conversion that takes place in an electric generator.
What is mechanical energy to electrical energy?
200
Where the electrical power enters the transformer.
What is the primary coil?
300

The effect caused when particles from the sun interact with the earth's magnetic field.

What is an aurora?

300
The formula for electrical energy.
What is Energy = Power x Time?
300
The two types of circuits.
What are series circuits and parallel circuits?
300
The two types of current.
What are alternating current and direct current?
300
Where the electrical power leaves the transformer.
What is the secondary coil?
400
The region around a magnet where the magnet exerts its force.
What is the magnetic field?
400
The unit of measure for power in the electrical power formula.
What is Watts?
400
The two devices used to prevent circuits from overheating.
What are fuses and circuit breakers?
400
The type of current produced by electromagnetic induction.
What is alternating current?
400
The three main parts of a transformer.
What are the primary coil, secondary coil and the soft iron core?
500
A solenoid with a ferromagnetic core.
What is an electromagnet?
500
The unit of measure for power in the formula for electrical energy.
What is Kilowatts?
500
The five ways to decrease resistance.
What are use a shorter wire, use a thicker wire, use a better conductor, lower the temperature and increase the voltage?
500
The two ways to induce a current with a magnet and a wire.
What are move the magnet in a coil of wire and move the coil of wire through the magnetic field?
500
To reduce energy losses in the long transmission wires.
What is the reason electricity is transmitted at high voltage?