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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 |