The magnets can be permanent or electric magnets. Permanent magnets are mainly used in small generators, and they have the advantage that they don't need a power supply. Electric magnets are iron or steel wound with wire. When electricity passes through the wire, the metal becomes magnetic and...
In Michael Faraday's generator, coils of copper wire rotating between the poles of a magnet produce a steady current of electricity. One way to rotate the disk is to crank it by hand, but this isn't a practical way to make electricity. Another option is to attach the shaft of the gene...
However, did you know that there is a lot about magnets at the atomic level that isn't known yet? Just like with most of the other basic forces we are familiar with, such as gravity, electricity, mechanics and heat, scientists start by trying to understand how they work, what they do...
What do a wrecking yard, a rock concert and your front door have in common? They each use electromagnets, devices that create a magnetic field through the application of electricity. Wrecking yards employ extremely powerful electromagnets to move heavy pieces of scrap metal or even entire cars fr...
In Physics, the law of conservation of energy states thatenergy can neither be created nor be destroyed. This means that in order togenerate electricity, another kind of energy should be used as fuel. Thomas Seebeck (1770-1831): Discovered the “Seebeck Effect“. ...
Why do magnets attract or repel? Explain the phenomenon of lightning by electrostatic induction. Why is it dangerous to hold sharp metal object while lightning is talking place? In what way are magnetic poles very different from electric charges?
The most common method of making magnets today involves placing metal in a magnetic field. CRStocker/Shutterstock To make a permanent magnet, all you have to do is encourage the magnetic domains in a piece of metal to point in the same direction. That's what happens when you rub a needl...
conductors make up the generator. Using the wind to turn blades creates the force needed to turn the magnets or the coil of conductor which in turn creates electricity. Below is a step by step process that highlights the methods by which a wind turbine actually comes to produce electricity. ...
The most common method of making magnets today involves placing metal in a magnetic field. CRStocker/Shutterstock To make a permanent magnet, all you have to do is encourage the magnetic domains in a piece of metal to point in the same direction. That's what happens when you rub a needl...
Of course, using a generator to make electricity is just the beginning. After you get your electrons moving along, you'll need an electrical circuit to do anything with it. Find out why next.Electrical Circuits Batteries When you load a battery into an electronic device, you're not simpl...