题目:
按照下列要求在下边空白处画出电路图.
(1)灯L1和灯L2并联.
(2)开关S2控制整个电路,S1控制L1电路.
(3)电流表A1测干路电流,电流表A2测通过灯L2的电流.
(4)电压表V测灯L1两端的电压.
答案:
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