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Electric Cicuits
Electric Circuits
| Term | Definition |
|---|---|
| ammeter | measures how much electricity is flowing around a circuit |
| amp (A) | the unit for current |
| cell | a source of electricity with a low 'energy'. Cells push electrons around a circuit |
| circuit | a complete loop that electricity flows around |
| component | something in a circuit, like a bulb, switch or motor |
| conductor | a material that lets electricity flow through it |
| electric current | the flow of electricity around a circuit |
| insulator | a material that does not let electricity flow through it |
| mains (electricity) | Alternating current at 230 V provided to houses , shops, etc |
| power pack | a source of electricity with a low energy (low voltage) |
| switch | turns electricity on or off, by closing or opening a gap in a circuit |
| voltage | a way of saying how much energy is transferred by electricity |
| atom | the smallest part of an element |
| electrical energy | the kind of energy carried by electricity |
| electron | tiny particle that flows around a circuit |
| filament | thin piece of wire inside a light bulb that glows when electricity is flowing through it |
| model | a scientific way of thinking about how things happen |
| resistance | a way of saying how difficult it is for electricity to flow through something |
| resistor | a component that makes it difficult for electricity to flow - resistors are used to control the size of the current in a circuit |
| variable resistor | a resistor that can be adjusted to change the amount of resistance it has |
| parallel circuit | a circuit with two or more wires running next to each other |
| series circuit | a circuit where there is only one loop of wire |
| fuse | a piece of wire that melts if too much electricity flows through it |
| electric shock | when electricity flows through the body |
| impulse | electrical signal carried by a nerve cell |