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题1 如图1,电路中的两只小灯泡 L_1和 L_2均正常发光,则下面几个说法中正确的是( )A.甲是电流表,乙是电压表B.甲是电压表,乙是电流表C.甲、乙都是电流表D.甲、乙都是电压表.大多数学生选 B.原因是从表面上看甲表与灯L_1、L_2并联,乙表与灯L_1、L_2串联.被假相迷惑.正确的判别方法是:简化电路,电压表 V 看成开路去掉,电流表 A 看
Question 1 As shown in Figure 1, the two small bulbs L_1 and L_2 in the circuit are all normally emitting light, then the following statements are correct () A. A is an ammeter, B is a voltmeter B. A is a voltmeter, B is Current meter C. A, B are ammeter D. A, B are voltmeters. Most students choose B. The reason is that on the surface A watch and the lamp L_1, L_2 in parallel, B table and the lamp L_1, L_2 in series. False phase confusion. The correct method of discrimination is: Simplify the circuit, the voltmeter V is seen as an open circuit, the ammeter A looks