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How can you turn an iron nail into an electromagnet?
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
The north pole of an electromagnet will attract
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
In an electromagnet, a current is passed through loops of wire that surround a core. Which material would be best to use as the core of an electromagnet?
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
Students attached both ends of along wire to the poles of a battery and wound the wire around a spoon. They found that the spoon will now pick up small objects made of iron. This is because the flow of electricity is able to produce
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
What happens to the magnetic field created by an electromagnet when the wire is disconnected from the source of energy?
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
Which of the following is true about an electromagnet?
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
Which of the following is true?
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
Which of these actions will increase the strength of the magnetic field produced around an electromagnet?
Wrap an electrical wire around it and include it in an open circuit.
The magnetic field “turns off”
the south pole of a bar magnet
a magnetic field
Increasing the voltage increases its strength.
A screw
Increase the number of coils of the wire around the iron core
IF the wire is coiled more times around the nail, THEN the strength of the electromagnet will increase
Check it!