Electricity (Physics)
WEeb.in Team Science Total Views: 503 Posted: Feb 6, 2020 Updated: Oct 1, 2026
ELECTRICITY
- A form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current
- Substances can be categorized into three types based on conductivity
| Conductors | Insulators | Semiconductors |
| a conductor is an object or type of material that allows the flow of an electrical current in one or more directions | An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field | A material that is neither a good conductor of electricity nor a good insulator, but has properties of electrical conductivity somewhere between the two |
| Silver, Copper, Iron | Glass, Wood | Germanium, Silicon |
- The potential difference between two conductors is equal to the work done in conducting a unit positive charges from one conductor to the other conductor through a metallic wire
- Electric Current is the rate at which electric charges pass through a conductor
- There are two main types of current in our world.
| Direct Current | Alternating Current |
| which is a constant stream of charges in one direction | Which is a stream of charges that reverses direction |
- The obstruction offered to flow of current by the conducting wire is called its resistance
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