and it's measured inamps. The "pressure" pushing the electrons along is called thevoltageand is measured involts. For instance, a generator spinning at 1,000 rotations per minute might produce 1 amp at 6 volts. The 1 amp is the number of electrons moving (1 amp physically means that...
Do you think it's necessary for school to have a model wire? Integrate. Who can't be all work together in a way that makes something more effective. Enable. To make it possible for someone to do something. Or for something to happen. For gold. The reins of things that are subject a...
The electrons don't necessarily have to run in circle to transport energy: in AC, they simply "run on the spot."Animation: What's the difference between DC and AC electricity? Suppose you have to vacuum a room. Direct current is a bit like working from one side to the other in a ...
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...
A transmission electron microscope fires a beam of electrons through a specimen to produce a magnified image of an object. A high-voltage electricity supply powers the cathode. The cathode is a heated filament, a bit like the electron gun in an old-fashioned cathode-ray tube (CRT) TV. It ...
What Electrical Engineers Do and Why It Matters Because electricity is ordinarily invisible to the naked eye, someone who intends to work as an electrical engineer should be curious about mysterious forces that significantly affect the universe but aren't obvious to a layperson. ...
The concentration of free electrons tends to equalize, which is a fundamental cause of electricity. For instance, if two conductive bodies with different charges touch, electrons flow from the body with more electrons to the one with fewer, equalizing the charge between them. This flow of electr...
Most of the electricity in the power grid is generated by powerful turbines spinning around. Why don't these turbines slow down from the work they do moving electrons? What is the effect of greenhouse gases and how does it contribute to global warming?
From the small AA batteries used in your TV remote to large, industrial power stations that pull electricity directly from a grid, if it stores and transfers electrons, then it can power an electromagnet. Let's start with a look at how household batteries function. Most batteries have two ...
How does electricity cause magnetism? How to create a magnetic field. Why does electricity create a magnetic field? What creates a magnetic field? How is the strength of the magnetic field determined? How do electrons account for magnetism in rare Earth magnets?