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一、综述综合应用题一般有两类,一类是综合考查力学的有关知识,另一类是综合考查电学的有关知识.电能知识和机械能有时要结合热能知识一起考查.综合应用题要用到的知识及公式有:1.欧姆定律:I=U/R;导体电阻:R=U/I,R=(U_额~2)/(P_额).2.电能(功):W=Pt,W=UIt.3.电功率:P=W/t,P=UI.4.焦耳定律:Q=I~2Rt,Q=W=Pt.
First, a comprehensive overview of the general application of the question there are two types, one is the comprehensive knowledge of the relevant knowledge of mechanics, and the other is a comprehensive examination of the relevant knowledge of electricity.Energy knowledge and mechanical energy sometimes combined with knowledge of thermal energy together. The knowledge and formula are: 1. Ohm’s law: I = U / R; resistance of the conductor: R = U / I, R = (U_ amount ~ 2) / (P_ amount) = Pt, W = UIt.3. Electrical power: P = W / t, P = UI.4. Joule’s law: Q = I ~ 2Rt, Q = W = Pt.