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在学习电功率知识的过程中,我们经常会遇到求某一用电器最大功率问题,此类题目常常以选择题或填空题的形式出现,而同学们在求解此类问题时常常会感到无从入手.其实只要掌握了下面的结论,求解此类问题则易如反掌,可快速、简捷、准确获解.问题的提出:定值电阻R0与滑动变阻器串联后接在电压为U的电路中,当滑动变阻器的阻值为多大时,其消耗的电功率最
In the process of learning electrical power knowledge, we often encounter the maximum power for a certain electrical appliances, such problems often appear in the form of multiple choice questions or fill in the blank, and students often find it difficult to solve such problems In fact, as long as the mastery of the following conclusions, the solution to such problems is easy, quick, simple and accurate solution.The question is put forward: R0 and the fixed rheostat in series with the voltage U in the circuit, when the sliding rheostat The resistance is the maximum, it consumes the most electrical power