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伏安法测量用电器的电功率实验是继伏安法测电阻实验后的又一个重要实验.在这个实验中,我们要测出小灯泡两端的电压U和通过小灯泡的电流I,根据电功率的计算公式P=UI计算出小灯泡的电功率.这个实验还可以拓展,进行相关问题的探究.同时,测量用电器的电功的方法还不止这一种,我们利用电能表也可以进行小灯泡等用电器功率的测量探究.一、体验伏安法测功率例1(2011年浙江温州)小明设计了如图1甲所示的电路
Voltammetry electrical measurement of electrical power experiment is another important experiment after voltammetry resistance test.In this experiment, we want to measure the voltage across the small bulb U and through the small bulb current I, according to the electric power Calculation formula P = UI calculate the electric power of small light bulbs .This experiment can also be expanded to explore related issues.At the same time, the method of measuring electrical work is more than this one, we can also use the meter to light bulbs, etc. Using electrical power measurement to explore. First, the volt-ampere method to test the power of Example 1 (Wenzhou, Zhejiang Province in 2011) Xiao-Ming designed as shown in Figure 1 A circuit