正确地判断串联和并联电路是初中电学教学中的一个难点.尤其近几年的考题在电路的识别上加大了难度,这使学生在作较难的电学题时不会分析电路,甚至无从下手.因此,正确地识别电路是学生解题的关键.笔者把教学中 It is difficult to correctly judge series and parallel circuits in the teaching of junior middle school electricity. Especially in recent years, the examination of the circuit has increased the difficulty in the identification of the circuit. This makes it impossible for students to analyze the circuit when doing difficult electrical problems, and even to make it impossible to analyze the circuit. Starting, therefore, the correct identification of the circuit is the key to solving the problem of students.