【ammeter】 - A-level备考词汇

ammeter

UK:  ['æmi:tə(r)]

US:  ['æmi:tə(r)]

复数：ammeters  

n.

1.电流表,安培计

2.安培表

3.电流计

4.〔物〕安培计

1 . An instrument used to measure the flow of current in a circuit is called an ammeter.
用来测量电路中电流流量的仪器叫做电流表。

2 . Since the voltage drop across the ammeter is negligible, essentially all the test voltage appears across R.
由于安培计上的电压降可以忽略，所以所有的测试电压都出现在电阻R上。

3 . If the component or material breaks down, all the voltage would be applied to the ammeter's input, possibly destroying it.
如果元件或材料发生击穿，全部电压都会加到安培计的输入端，从而可能将其损坏。

4 . To start with, you need to break the circuit so that the ammeter can be connected in series.
开始时，你需要断开电路，以让电流表可以串入。

5 . The guard can be used to isolate the high impedance input lead of the ammeter from leakage current due to voltage sources.
保护可以用来把安培计的高阻输入引线和由电压源引起的泄漏电流隔离开来。