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1电流的瞬时值、平均值、有效值的含义,求解方法及这些物理量在习题中对应功用(1)电流的瞬时值电流的瞬时值指电流在随时间的变化过程中,在某个时刻所对应的电流值.在纯电阻电路中,电流的瞬时值一般可由电动势的瞬时值除以电路总电阻得到(I=RE),也可以由I-t图线直接读出.功用:
1 The meanings of instantaneous values, average values, and effective values of the current, the solution method, and the corresponding physical quantities used in the exercises. (1) Instantaneous value of current The instantaneous value of the current refers to the change in current over time, at some point in time. Corresponding current value. In the pure resistance circuit, the instantaneous value of the current can be generally obtained by dividing the instantaneous value of the electromotive force by the total resistance of the circuit (I=RE), and can also be read directly from the It graph.