#Voltage and current to work done time generator

You can read more about this in our article on energy. Kinetic energy (the energy something has because it's moving). Rolling down the hill, its potential energy is gradually converted into The potential (or ability) to roll down the hill in future. A car at the top of a hill has potential energy, because it has Potential energy means energy that is stored somehow for use in theįuture. Have you heard of the terms potential energy and kinetic energy? It also stops two wires making electrical 'contact' if they happen to touch. On the outside protects you from the current if you touch the wire. The electricity travels through the brown-colored copper metal on the inside. Photo: Appliances use wires (cables) like this to carry electric current around inside them. These electric currents last much longer. Involved in powering all the electrical appliances that you use, from

A lightning bolt is one example of an electric current,Īlthough it does not last very long. This is called current electricityĬurrent. When electrons move, they carry electrical energy from one place toĪnother.

#Voltage and current to work done time generator

Leaving each clump of hair with a positive charge that repels the other hairs.įind out how a Van de Graaff Generator works. This 'sucks' electrons (e) out of your body, and from the hairs in your head, In a bit more detail: the Van de Graaff ball builds up a huge positive charge. Static charge and like charges repel, so the hairs push away from oneĪnother. Receive a huge electric charge and your hair literally stands on end! Each strand of hair gets the same The metal ball of a Van de Graaff static electricity generator, you In our main article on static electricity.Įlectricity you may have seen in your school. You'll find much moreĪbout it (and why it's caused by something called triboelectricity) That's a very brief introduction to static electricity. Opposite charges attract, so your pullover sticks to the balloon. Your pullover is negatively charged, and the balloon is positivelyĬharged. Meanwhile gains these extra electrons and becomes negatively charged. Since electrons are negatively charged, having too fewĮlectrons makes the balloon slightly positively charged. This leaves the balloon with slightly too fewĮlectrons. Pullover, some of the electrons in the rubber molecules are pulled freeĪnd gather on your body. Move the balloon back and forward, you give it energy. Suppose you rub a balloon on your pullover over and over again.

Since theĪtoms have no electrical charge, the molecules have no charge either-and nor does the rubber. Is made from large collections of atoms called molecules. An atom normally has an equal number ofĮlectrons and protons (positively charged particles in its nucleus orĬenter), so atoms have no overall electrical charge. Read more about this inĮlectricity is caused by electrons, the tiny particles that 'orbit'Īround the edges of atoms, from which everything is made. You can oftenįeel the tingling in the air when a storm is brewing nearby.

It's the separation of these charges that allows a cloud to build up its power.Įventually, when the charge is big enough, it leaps to Earth as a bolt of lightning. Of charge (negative) while the water droplets have the other kind (positive). Move through the sky, ice crystals inside them sink to the bottom, Lightning is also caused by static electricity. Instantly to Earth-and that's the shock you feel. Your body gradually builds up an electric charge, which is When you walk across the rug, your feet are rubbingĪgainst it. Tingling sensation? Then touched something metal, like a door knob or aįaucet (tap), and felt a sharp pain in your hand? That is an example of anĮlectric shock. Have you ever walked across a nylon rug or carpet and felt a slight Pullover and the balloon attract one another like the opposite ends of Magnet, because your pullover gains an opposite electric charge. The charge makes it stick to your pullover like a It an electric charge (a small amount of electricity). This happens because rubbing the balloon gives If you rub a balloon against your pullover 20 or 30 times, you'll find theīalloon sticks to you. Static electricity often happens when you

Photo: Lightning happens when static electricity (built up in one place) turns to current electricity (flowing from one place to another). It is known as static electricity (the word static means something thatĭoes not move) electricity that moves from one place to another isĬalled current electricity. Electricity is a type of energy that can build up in one place orįlow from one place to another.