l/cm | 30.00 | 40.00 | 50.00 | 60.00 | 70.00 | 80.00 |
R/Ω | 2.1 | 2.9 | 3.5 | 4.2 | 5.0 | 5.7 |
A.电流表,量程0~500μA,内阻约150Ω |
B.电流表,量程0~10mA,内阻约10Ω |
C.电压表,量程0~3V,内阻约5KΩ |
D.电压表,量程0~15V,内阻约10KΩ |
A.待测微安表(量程500,内阻约300Ω) |
B.电阻箱(最大阻值999.9Ω) |
C.滑动变阻器R1(最大阻值为10Ω) |
D.滑动变阻器R2(最大阻值为1KΩ) |
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