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因阻值变化,引起通过电阻的电流变化,电阻两端的电压也在变化,本文通过等效法探讨求解阻值变化的电阻消耗功率极值的典型问题.
Because of the resistance change, the current through the resistor changes, and the voltage across the resistor also changes. This paper discusses the typical problem of solving the resistance consumption power extreme value by the equivalent method.