The student will send a current through the wire after the wrapping of the copper wire. Option A is correct.
What is electromagnet?
An electromagnet is a magnet whose magnetic field is generated by an electric current. Wire coiled into a coil is used to make electromagnets.
A current flowing through the wire produces a magnetic field that is focused in the hole, which serves as the coil's co
The Student wants to make an electromagnet using a copper wire wrapped around an iron bar. The student will send a current through the wire after the wrapping of the copper wire.
Hence option A is correct.
To learn more about the electromagnets refers to the link:
https://brainly.com/question/13803241