Electromagnetism
Electromagnetism is the use of an electromagnetic in any situation. Electromagnets are used in many different situations. An electromagnetic is very useful as its attractiveness can be turned on and off through the implication of a current. An electromagnet works through the implication of a solenoid. To create an electromagnetic first a solenoid must be wrapped around a iron core (iron core not necessary but increases strength of magnetic field) a current must be then run through the solenoid and then a magnetic field is created.