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Yr10 Electricity
| Term | Definition |
|---|---|
| Atom | The smallest particle of matter; made up of sub-particles (proton, neutron and electron). |
| Electricity | Energy made available by the flow of electrical charge through a conductor. |
| Static Electricity | Build up of electrical charge on an object due to friction |
| Electron | Negatively charged subatomic particles |
| Terminal | Connection point on a component in a circuit |
| Conductor | A substance that allows heat or electricity to move through it easily eg copper |
| Insulator | A substance which does not allow heat or electricity to move through it easily eg plastic, rubber, cork. |
| Battery | A power supply created by a chemical reaction that produces an electrical force field to drive the current |
| Energy supplier | Any object that creates a power supply eg battery , power pack, solar cells |
| Energy user | Any object that converts the electrical energy provided by the power source into another form of energy eg light bulb, heater |
| Circuit | A complete conducting pathway |
| Series circuit | A circuit in which all the components are in the same loop |
| Parallel circuit | A circuit in which components are connected in several branches |
| Bulb | A component in a circuit that converts electrical energy to light energy; it’s a type of resistor. |
| Current | A flow of charged particles through a conductor |
| Voltage | The energy gained or lost as the current passes through a component |
| Resistance | The opposition to the flow of electrons through a substance |
| Ampere | The unit for current |
| Volt | The unit for voltage |
| Ohm | The unit for resistance |
| Ammeter | An instrument which measures the size of an electric current |
| Voltmeter | A meter used to measure voltage gain or loss |
| Conventional current | An electric current considered to flow from positive to negative |
| Variable resistor | A resistor whose resistance can be varied; also known as rheostat. |
| Power station | Where electricity is generated at a very high voltage to be carried around the country by the National Grid |
| Switch | A component in a circuit that allows you to break and rejoin a circuit |
| Fuse | A fuse is a thin piece of metal that melts easily if the current is too great |
| Magnetic field | A region in which a magnetic force can be observed |
| Electromagnet | A coil of wire wrapped around a core of soft iron. When there is a current in the wire, a magnetic field results. |
| Magnetic Poles | The regions of a magnetic field where the forces appear strongest eg North and South |
Created by:
kjsime
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