电路出现了故障,需要我们进行分析与判断,物理实验中常用电流表和电压表来进行,根据它们的示数情况就可以判断。判断方法一般为:(1)由故障现象分析故障原因;(2)利用表示故障原因的选项去验证故障现象;有时把两种方法加以综合。电路故障分析是综合性较强的题型,分析时首先要看清电路及其 Failure of the circuit requires us to conduct analysis and judgment. Commonly used ammeters and voltmeters are used in physical experiments. Judging from the condition of their indications. Judgment methods are generally: (1) analyze the cause of the fault by fault phenomena; (2) use the option to indicate the cause of the fault to verify the fault phenomenon; sometimes the two methods are integrated. Circuit failure analysis is a comprehensive type of problem, first of all to look at the circuit and its analysis