本题目来源于试卷: Electric Currents，类别为 IB物理学
[问答题]
Is current used up in a res uy 5-8fy/wt*3vyo idjist2fiamm2l9 u es-cv*ab +rxs3-or? Explain.
参考答案:
Current
is NOT used up in a resistor. The same
current flows into the resistor as flows out of the resistor. If that were not the case, there would be
either an increase or decrease in the charge of the resistor, but the resistor
actually stays neutral, indicating equal flow in and out. What does get “used up” is potential
energy. The charges that come out of a
resistor have lower potential energy than the charges that go into the
resistor. The amount of energy decrease
per unit time is given by $I^2R$.
本题详细解析:
暂无
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