An electromagnet is a
with a
core.

An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.

terd muffin is the correct answer

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.