Electromagnetism

Electromagnet (Julie, Faust and Gabriela) -What is a electromagnet ? It is a strong magnet that can be turned on and off

Solenoid: A coil of wire with a current. A solenoid with a ferromagnetic core is called an electromagnet.

Several ways to increase the strength of a solenoid:
1) Increase the current in the solenoid 2) add more loops of wire in the solenoid 3) wind the coils of the solenoid close together 4) increase the strength by increasing the ferromagnetic material of the core



- Electromagnetism is the relationship between electricity and magnetism.

- They are important, because we use them in our everyday lives, and because they only work, when we need it. The magnet is temporary; it works when there is current, only.

- An electromagnet is a solenoid with a ferromagnetic core. Its magnetic field is produced by current in the wire and magnetized core.

Galvanometer (Manuel, Ignacio and Santiago)

Electromagnetic Induction (Christian, Victoria and Sofia)

Electric Motor (Adelaide, Carolina and Juan Pedro)

Electric Generator (Jin Ah, Luis and Fernanda)  A simplified way to think about a generator is to imagine the act of a pump pushing water through a pipe. Only instead of pushing water, a generator uses a magnet to push electrons along. A water pump moves a certain number of water molecules and applies a certain amount of pressure to them. In the same way, the magnet in a generator pushes a certain number of electrons and puts a certain amount of pressure to the electrons.  In an electrical circuit, the number of electrons in motion is called the current, and it's measured in amps. The pressure pushing the electrons along is called the voltage and is measured in volts.

Transformers (Marcelo, Paul and Joana)

AC/DC Current (Paulo, Mateus and Juan)