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An electromagnet used in a junkyard can only pick up cars. How could the electromagnet be improved so that it could lift trucks and other large vehicles?
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
How can you increase the strength of an electromagnet?
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
Suki can have all five appliances in her kitchen on at the same time, or she can have each appliance on one at a time. How are the appliances in Suki’s kitchen wired?
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
Which of the following copper wires will have the least amount of resistance?
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
What happens to the magnetic field of an electromagnet if you increase the current in the wire?
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
Catherine rubs an iron nail in one direction with the south pole of a magnet. Which of the following is true of the magnetized nail?
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
Jane puts the north pole of a bar magnet near an object on her desk. As the magnet gets closer to the object, the object is repelled and moves away from the magnet. Which of th
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
Its domains have become rearranged so that they line up in one direction.
The electric current and the number of coils in the solenoid could be increased.
The wire creates a magnetic field that interacts with the magnetic field of the magnet.
a short, thick wire
the magnetic field gets stronger
increase the number of coils and/or increase the current
in a parallel circuit
The object is a magnet or has been magnetized.
Check it!