Show:
Batteries
Electric Circuits
Electromagnets & Induction
Electromagnets & Induction
Electromagnets & Induction
100
This terminal of the battery is where the electrons leave...
What is the negative terminal?
100
Electrons leave this part of the battery.
What is the negative terminal?
100
Why are paper clips attracted to magnets?
D. They contain Iron
100
When will a circuit breaker trip, or turn off?
B. When a very strong current passes through it.
100
In physics, to "induce" something is to:
B. Create it.
200
This terminal of the battery is where the electrons return in the circuit.
What is the positive terminal?
200
Electrons return to this part of the battery.
What is the positive terminal?
200
What effect will the north pole of one manget have on the north pole of another magnet?
A. Repulsive
200
Where does a magnetic field occur in relation to an electrified wire?
C. Around the entire length of the wire
200
What might happen if transformers didn't exist?
A. The electricity in your house might have an extremely high voltage.
300
This is the part of the battery that is a pasty mixture of chemicals that conducts electricity.
What is the electrolyte?
300
This covers the wire for protection.
What is Rubber Insulation?
300
What is the simplest requirement for an electromagnet?
D. A length of electrified wire
300
To change the polarity of an electromagnet, you would:
A. Reverse the current's direction
300
Which of the following is a true statement about Hans Orsted and Michael Faraday?
D. Faraday built on Orsted's discoveries to describe electromagnetic induction
400
This is on the negative terminal of the battery and is usually a metal like zinc that gives up electrons.
What is the Anode?
400
This is the device that uses the electrons to do 'work' or perform a task.
What is the Load?
400
How do electromagnets differ from regular magnets?
D. All of the above... (A. They can be turned on and off, B. Their polarity can be reversed, C. Their strngth can be changed.)
400
How would you reverse the direction of the current flowing through the coil in Faraday's experiment?
C. Reverse the magnet's direction
400
When an electric current runs thorugh a wire, a magnetic field is induced....
A. Around the wire
500
This is on the positive terminal of the battery and is usually a metal like manganese that collects electrons.
What is the Cathode?
500
This is where the energy comes from...
What is the Power Source?
500
How would you compare the magnetic field generated by a simple length of wire to the magnetic field generated by a coil of wire?
A. The coil generates a stronger magnetic field.
500
Two electromagnets contain the same t ypes of magnets and wires. But the magnet in the first moves much faster than the second. Therefore:
A. The first electromagnet has a more powerufl current than the second.
500
What is the relationship between electricity and magnetism? Choose the best answer...
C. They are two forms of the same basic force.