A student has to separate a mixture of sand and iron filings. The student is required to pick up the iron filings and place them in another container.
Why should the student use an electromagnet for this activity?
Responses
An electromagnet can hold the iron filings longer than a normal magnet.
An electromagnet can hold the iron filings longer than a normal magnet.
An electromagnet’s magnetic field is the weakest type of magnetic field, so the sand will not be attracted to the magnet.
An electromagnet’s magnetic field is the weakest type of magnetic field, so the sand will not be attracted to the magnet.
An electromagnet produces the strongest type of magnetic field.
An electromagnet produces the strongest type of magnetic field.
An electromagnet’s magnetic field can be turned off, so the filings can be easily separated from the magnet.