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电功、电功率和电热是初中物理教学中的重点和难点,也是考试中的热点。这类计算的关键是分清纯电阻电路和非纯电阻电路。本文针对这类计算进行了分析。
Electricity, electric power and electric heat are the key and difficult points in junior high school physics teaching, and are also hot spots in examinations. The key to this type of calculation is to distinguish between purely resistive and non-purely resistive circuits. This article analyzes this type of calculation.