Beath High School - Int 1 Physics1 Intermediate 1 Physics Practical Electricity Glossary ammeter to circuit circuit breaker to consumer unit continuity to earth wire extension block to lamp live wire to neutral wire ohmmeter to power power station to series connection variable resistor to voltmeter

Beath High School - Int 1 Physics2 ammeter ammeter to circuit ampere appliance broken circuit circuit an instrument for measuring current it is connected in series the unit for electric current a device which is plugged into the mains e.g. television, washing machine etc. a circuit with a gap in it no current can flow a path round which electricity can flow

Beath High School - Int 1 Physics3 circuit breaker circuit breaker to consumer unit circuit symbol complete circuit component consumer unit an automatic switch which breaks a circuit when a fault develops a simple picture to represent a component in a diagram a circuit with no gaps in it electricity can flow a part used in an electric circuit, e.g. lamp, resistor, fuse etc. the board where the electricity supply comes into a house and goes through the meter and fuses

Beath High School - Int 1 Physics4 continuity continuity to earth wire continuity tester current double insulated earth wire this means whether a circuit has a break in it or not a circuit for testing whether a circuit has a break in it the flow of electricity round a circuit this means that an appliance has no outer parts which can become “live”. It does not need an earth wire in its flex. a safety connection. This helps to prevent a person from getting an electric shock if a fault occurs in an appliance.

Beath High School - Int 1 Physics5 extension block extension block to lamp function fuse heater lamp a block of sockets which allows more appliances to be connected to the mains at one time the “job” something does a safety component. It melts and breaks the circuit if too high a current flows. this changes electrical energy to heat energy. It can be made from a piece of resistance wire. a component which changes electrical energy to light energy because it contains a wire (the filament) which heats up

Beath High School - Int 1 Physics6 live wire live wire to neutral wire mains electricity motor multimeter neutral wire the brown wire in a plug which is at a high voltage electricity supplied at 230 volts to homes in Britain a component which changes electrical energy to kinetic energy (it rotates) a meter which can be set to be used as an ammeter or as a voltmeter or as a resistance meter (ohmmeter) the blue wire in a plug

Beath High School - Int 1 Physics7 ohmmeter ohmmeter to power ohms open circuit parallel connection power a meter used to measure the resistance of a component the units of resistance an electrical path which has a break in it this type of connection has a split in the wiring to allow a choice of paths for the current the amount of energy per second, measured in watts. 1 kW = 1 kilowatt = 1000 W

Beath High School - Int 1 Physics8 power station power station to series connection power supply resistance resistor series connection a place where mains electricity is generated (often by burning coal) a device (like a labpack) which gives out a variable voltage the opposition to current it is measured in ohms (  ) a component which restricts the current in a circuit components connected so that the current has only one path though the circuit

Beath High School - Int 1 Physics9 variable resistor variable resistor to voltmeter voltage voltmeter a resistor whose value can be changed the electrical “push” of a supply, e.g. a 9.0 V battery provides more energy than a 3.0 V one this device measures the voltage across any supply or component

Beath High School - Int 1 Physics10 End of Glossary Intermediate 1 Physics Practical Electricity Glossary