關於Voltage同埋Current

2006-12-06 7:52 am
我想問
咩係voltmeter in parallel/in series 同埋 ammeter in parallel/in series?
兩者有咩分別?
更新1:

可唔可以唔好COPY一大段野果D? 因為我SEARCH過,好多都唔明-v-

回答 (2)

2006-12-07 11:59 am
✔ 最佳答案
Voltmeter~
place it parallel in a circuit
mesured in voltages
''measure of how much energy each charge is carrying''

Ammeter~
place in series in a circuit
mesured in Amperes
''measure of number of charges''

in a series circuit, there's only one path for the current to flow..
the light bulbs share the voltage,,but the amperes remains the same..

in a parallel circuit, there's several paths for the current to flow..
voltage are the same in each routes,, but the current will split
2006-12-06 8:52 pm
伏特計(voltmeter)是用來量度(measure)電路(circuit)中兩點間的電位差(potential difference),因此要用導線把伏特計連上該兩點。例如要量度電路中跨過某(或某些)元件(component)兩端的電位差,我們便用導線把伏特計連接在電路上該(或該等)元件的兩端,這種連接方式,是伏特計與該(或該等)元件並聯(in parallel)。

安培計(ammeter)是用來量度電路中流過某點的電流(current)。假設要量度流過某點的電流,我們把導線在該點截斷,然後把導線兩個截口連接上安培計的兩端。之前流過該點的電流,現在流過安培計,於是安培計便可顯示出電流讀數。這種連接方式,是安培計與電路串聯(in series)。


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