Electricity Keywords

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Electrical Power
The rate at which an appliance transfers energy
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Current
The rate of flow of charge around the circuit.
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Voltage
The driving force that pushes the current around
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Double Insulated
An appliance that has a plastic casing and no metal parts showing.
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Electrical Safety Device
A device that protects a circuit from damage if too much current flows.
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Power Rating
The amount of current the appliance will draw from the supply.
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Voltage
The amount of voltage the appliance will have.
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Resistance
Anything in the circuit which slows the flow down.
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Ammeter
Measures current (in amps) flowing through the component.
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Voltmeter
Measures voltage (in volts) across the component.
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Variable Resistor
Alters the current flowing through the circuit by varying the resistance.
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A.C
Main supply. The current is constantly ALTERNATING direction.
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D.C
Direct Current. The current remains flowing in the SAME direction.
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LED
Light-emitting diodes.Emits light when current flows through them in the forward direction.
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LDR
Light-dependant resistor. Changes it's resistance depending on how much light falls on it.
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Thermistor
Temperature-dependant resistor. Changes it's resistance depending on the temperature.
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Series Circuits
A circuit where different components are connected in a line end to end.
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Parallel Circuits
A circuit where each component is separately connected to negative and positive of the supply.
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Electrical Conductors
Charge easily- current can flow through them.
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Electrical Insulators
Dont conduct charge very well- current can't flow through them.
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Live wire
Where the electrical energy travels.
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Neutral wire
Completes the circuit.
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Earth Wire
No current flowing through it. Protects you if an appliance develops a fault.
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Other cards in this set

Card 2

Front

The rate of flow of charge around the circuit.

Back

Current

Card 3

Front

The driving force that pushes the current around

Back

Preview of the back of card 3

Card 4

Front

An appliance that has a plastic casing and no metal parts showing.

Back

Preview of the back of card 4

Card 5

Front

A device that protects a circuit from damage if too much current flows.

Back

Preview of the back of card 5
View more cards

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