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→About Ammeters
: An ideal [[ammeter]] has zero [[Electrical Resistance|resistance]] because otherwise adding an [[ammeter]] to a [[circuit]] would change the [[Electrical Current|current]].
: [[Ammeter]]s can be [[Analogue Ammeter|analogue]] with a needle pointing to numbers on a dial or it can be [[Digital Ammeter|digital]] with a number display.
{| class="wikitable"
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|[[File:Circuit+Diagram2CircuitDiagramBatteryBulbBulbSeries.png|center|500px200px]]|[[File:CircuitDiagramBatteryBulbBulbSeries.png|center|200px]]
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| style="height:20px; width:200px; text-align:center;" |An '''To [[measure]] the [[Electrical Current|current]] through bulb 1 the [[ammeter]] can be placed anywhere in this [[Series Circuit|series circuit]].| style="height:20px; width:200px; text-align:center;" |To [[measure]] the [[Electrical Current|current]] through bulb 2 the [[ammeter]] can be placed anywhere in this [[Series Circuit|series circuit]].|-|[[File:CircuitDiagramBatteryBulbBulbAmmeterSeries.png|center|200px]]|[[File:CircuitDiagramBatteryBulbBulbAmmeterSeries.png|center|200px]]|} {| class="wikitable"|-|[[File:CircuitDiagramBatteryBulbBulbParallel.png|center|200px]]|[[File:CircuitDiagramBatteryBulbBulbParallel.png|center|200px]]|-| style="height:20px; width:200px; text-align:center;" |To [[measure]] the [[Electrical Current|current]] through bulb 1 the [[ammeter''' ]] must be placed in [[Series Circuit|series]] with a bulb 1.| style="height:20px; width:200px; text-align:center;" |To [[measure]] the [[Electrical BulbCurrent|current]] through bulb 2 the [[ammeter]] must be placed in [[Series Circuit|series]] with bulb2.|-|[[File:CircuitDiagramBatteryBulbAmmeterBulbParallel.png|center|200px]]|[[File:CircuitDiagramBatteryBulbBulbAmmeterParallel.png|center|200px]]
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