19,879
edits
Changes
→Key Stage 3
: The '''components''' you should know are:
*[[Electrical Cell]]
*[[Battery]]
*[[Wire]]s
*[[Electrical Bulb]]
| style="height:20px; width:200px; text-align:center;" |A [[Voltmeter]] is used to [[measure]] the [[Potential Difference]] between two points on a [[circuit]].
| style="height:20px; width:200px; text-align:center;" |An [[Ammeter]] is used to [[measure]] the [[Electrical Current|Current]] passing through part of a [[circuit]].
|}
==Key Stage 4==
===Meaning===
A '''component''' is a part of an [[Circuit|electrical circuit]].
===About Components===
: '''Components''' in a [[circuit]] are used to do different jobs.
: The '''components''' you should know are:
*[[Electrical Cell]]
*[[Wire]]s
*[[Electrical Bulb]]
*[[Switch]]
*[[Buzzer]]
*[[Motor]]
*[[Resistor]]
*[[Voltmeter]]
*[[Ammeter]]
===Examples===
{| class="wikitable"
|-
|'''Electrical Cell'''
|'''Wires'''
|'''Filament Bulb'''
|-
|[[File:CellSymbol.png|center|200px]]
|[[File:WireSymbol.png|center|200px]]
|[[File:BulbSymbol.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |A cell makes the electricity flow in a circuit.
| style="height:20px; width:200px; text-align:center;" |Wires are the path for electricity to flow.
| style="height:20px; width:200px; text-align:center;" |A filament bulb lights up when electricity flows through it.
|}
{| class="wikitable"
|-
|'''Switch'''
|'''Buzzer'''
|'''Motor'''
|-
|[[File:SwitchOpenSymbol.png|center|200px]]
|[[File:BuzzerSymbol.png|center|150px]]
|[[File:MotorSymbol.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |A switch can complete or break a circuit to turn it on and off.
| style="height:20px; width:200px; text-align:center;" |A buzzer makes a sound when electricity flows through it.
| style="height:20px; width:200px; text-align:center;" |A motor spins when electricity flows through it.
|}
{| class="wikitable"
|-
|'''Resistor'''
|'''Voltmeter'''
|'''Ammeter'''
|-
|[[File:ResistorSymbol.png|center|200px]]
|[[File:VoltmeterSymbol.png|center|200px]]
|[[File:AmmeterSymbol.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[resistor]] reduces the flow of [[Electrical Current|current]] through a [[circuit]].
| style="height:20px; width:200px; text-align:center;" |A [[Voltmeter]] is used to [[measure]] the [[Potential Difference]] between two points on a [[circuit]].
| style="height:20px; width:200px; text-align:center;" |An [[Ammeter]] is used to [[measure]] the [[Electrical Current|Current]] passing through part of a [[circuit]].
|-
|'''Variable Resistor'''
|'''Light Dependent Resistor'''
|'''Thermistor'''
|-
|[[File:VariableResistorSymbol.png|center|200px]]
|[[File:LightDependentResistorSymbol.png|center|200px]]
|[[File:ThermistorSymbol.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[Variable Resistor|variable resistor]] can change [[Electrical Resistance|resistance]] controlling the [[Electrical Current|current]] flowing through a [[circuit]].
| style="height:20px; width:200px; text-align:center;" |A [[Light Dependent Resistor|light dependent resistor (LDR)]] changes [[Electrical Resistance|resistance]] depending on [[light]] intensity, the lower the intensity the greater the [[Electrical Resistance|resistance]].
| style="height:20px; width:200px; text-align:center;" |A [[thermistor]] changes [[Electrical Resistance|resistance]] depending on the [[temperature]].
|}