ajcoelho said:Homework Statement
Suppose you have a simple electromagnet. In the middle of the coil you have a magnet oscilllating. Thus, there will be an induced current in the coil. But where the electrons of this current come from? Do they come from the atoms that form the coil?
An electromagnet creates charge by converting electric energy into magnetic energy. This is done by running an electric current through a wire, which creates a magnetic field around the wire. The magnetic field can then attract or repel other objects, depending on the direction of the current.
No, an electromagnet is not the same as a regular magnet. A regular magnet is a permanent magnet, meaning it always has a magnetic field, while an electromagnet only has a magnetic field when an electric current is running through it.
Yes, an electromagnet can be turned on and off by controlling the flow of electric current through the wire. When the current is turned off, the magnetic field disappears, and the electromagnet is no longer magnetic.
An electromagnet is a wire with an electric current running through it, while a solenoid is a coil of wire with an electric current running through it. An electromagnet can have a magnetic field in any direction, while a solenoid has a magnetic field that runs in a straight line through the center of the coil.
Electromagnets are used in a variety of everyday items, such as speakers, headphones, doorbells, and computer hard drives. They are also used in industrial applications, such as electric motors, generators, and magnetic separators. In medicine, electromagnets are used in MRI machines to create detailed images of the body's internal structures.