In physics and electrical engineering, a conductor is an object or type of material that allows the flow of an electrical current in one or more directions. Materials made of metal are common electrical conductors. Electrical current is generated by the flow of negatively charged electrons, positively charged holes, and positive or negative ions in some cases.
In order for current to flow, it is not necessary for one charged particle to travel from the machine producing the current to that consuming it. Instead, the charged particle simply needs to nudge its neighbor a finite amount who will nudge its neighbor and on and on until a particle is nudged into the consumer, thus powering the machine. Essentially what is occurring here is a long chain of momentum transfer between mobile charge carriers; the Drude model of conduction describes this process more rigorously. This momentum transfer model makes metal an ideal choice for a conductor as metals, characteristically, possess a delocalized sea of electrons which gifts the electrons enough mobility to collide and thus effect a momentum transfer.
As discussed above, electrons are the primary mover in metals; however, other devices such the cationic electrolyte(s) of a battery, or the mobile protons of the proton conductor of a fuel cell rely on positive charge carriers. Insulators are non-conducting materials with few mobile charges that support only insignificant electric currents.
Answer:
Who
Explanation:
My father who went on a tour of China, is coming back this evening.
I hope it helps! Have a great day!
Pan~
Foreshadowing is a writers (screen writers or authors) way of revealing an event that will take place in the future. Usually writers just give you snippets of what is going to happen. By doing that it helps make a story more exciting and creates an are of suspension. Hopefully I helped.
Answer:
One day, I went to a trip by myself, with no relatives or friends. I decided that I wanted some space and to relieve all my stress from school. It was a random pick and for some reason, it turned out to be Colorado. I packed everything for a summer vacation like shorts, slides, and what not! When I arrived there, it was the complete opposite. It was freezing outside and I had to buy clothes for this type of weather. Can this day get any worse?? So I then decided to arrive at the cabin that I booked online. When I got the keys to my cabin, I just stopped completely. The cabin looked ugly! Outside was like the 1930's style with dull colors. It didn't even look like the ones in the photos either so I had to get in to see if it looks the same in the inside. Guess what? It was the exact same feeling as in the outside. I just couldn't stand being inside so I went to go on a walk instead. The worst was yet to come. I slipped on ice and I was all wet and in pain. I then said "You know what, I'm going back home because this is ridiculous." So the next morning, I went back to the airport and came back home where I actually feel more comfortable. Never will I pack a random trip by myself again.
Hope this story works for you!
