4. An electromagnet is created by wrapping a wire conductor around a metal core and sending a current through it. If the number of turns in the conducting wire are decreased and the current is kept the same, how does that affect the magnetic strength?
Decreasing the number of turns in the conducting wire will decrease the magnetic strength of the electromagnet. This is because the magnetic field produced by an electromagnet is directly proportional to the number of turns in the conducting wire. The more turns there are, the stronger the magnetic field will be. Therefore, reducing the number of turns will result in a weaker magnetic field.
