Circuit symbols: Electricity: Physics: GCSE (9:1)

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14 Terms

1
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Switch (open)

Used to turn a circuit off

<p>Used to turn a circuit off</p>
2
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Switch (closed)

Used to turn a circuit on

<p>Used to turn a circuit on</p>
3
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Cell (electrical)

Provides the energy for a circuit

<p>Provides the energy for a circuit</p>
4
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Battery

Two or more cells connected together

<p>Two or more cells connected together</p>
5
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Diode

A device that allows current to flow in one direction only

<p>A device that allows current to flow in one direction only</p>
6
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Resistor (fixed)

A device that restricts or limits the flow of current

<p>A device that restricts or limits the flow of current</p>
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Variable resistor

A device that has a slider which can be moved to change the resistance

<p>A device that has a slider which can be moved to change the resistance</p>
8
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LED (light-emitting diode)

A diode which emits light and is much more efficient than a filament bulb

<p>A diode which emits light and is much more efficient than a filament bulb</p>
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Lamp (filament bulb)

A device containing a filament in a bulb that heats up when a current flows so that it emits light

<p>A device containing a filament in a bulb that heats up when a current flows so that it emits light</p>
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Fuse

A safety device consisting of a strip of wire that melts, breaking an electric circuit, if too much current passes through it

<p>A safety device consisting of a strip of wire that melts, breaking an electric circuit, if too much current passes through it</p>
11
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Voltmeter

A device placed in parallel with a component to measure the potential difference (voltage) across it

<p>A device placed in parallel with a component to measure the potential difference (voltage) across it</p>
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Ammeter

A device placed in series with a component to measure the current through it

<p>A device placed in series with a component to measure the current through it</p>
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Themistor

A device whose resistance decreases as the surrounding temperature increases

<p>A device whose resistance decreases as the surrounding temperature increases</p>
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LDR (light-dependent resistor)

A device whose resistance decreases as the surrounding light intensity increases

<p>A device whose resistance decreases as the surrounding light intensity increases</p>

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