物理 -- 電學

In the series,
If you decrease the resistance of the circult.The current will increase.
According to the formula?
V=IR If the resistance(R)decrease V unchange The current will increase.
In the parallel,
If you decrease the resistance of the circult.The volt remain unchange(because yje volt is from the cell.however the current will become smaller.
According to the formula:
the equivalent R will become bigger when you decrease the resistance of the circult.
Therefore V=IR the R become bigger will make the volt smaller.

很好

加大電流...
在一個電路中，電壓是不變的２２０伏（直流電），根據
R=U/i，增大電流...
（交流電也一樣）

UM ..2個刀會吧 ..
V=IR
R=V/I
者係R同V成正比 ..
R同I成反比 ...
R降低 ,,係I不變GE情況下V刀會降低 ..
同樣,,R降低 ..係V不變GE情況下I會升高 ...