当开关s接1时相当于量程为0.6安的电流表,R1两端的电压降(即电流计两端压降)为:
1mA x 0.1k =0.1 (V)
R1= 0.1V / (600-1)mA = 0.169 (ohm)
当开关s接2时相当于量程3伏电压表,R2两端的电压降为:3-0.1=2.9 (V)
R2= 2.9 V/ 0.6 (A) = 4.833 (ohm)
当开关s接1时相当于量程为0.6安的电流表,R1两端的电压降(即电流计两端压降)为:
1mA x 0.1k =0.1 (V)
R1= 0.1V / (600-1)mA = 0.169 (ohm)
当开关s接2时相当于量程3伏电压表,R2两端的电压降为:3-0.1=2.9 (V)
R2= 2.9 V/ 0.6 (A) = 4.833 (ohm)