方案编号 | 电阻箱的阻值R/Ω | ||||
1 | 400.0 | 350.0 | 300.0 | 250.0 | 200.0 |
2 | 80.0 | 70.0 | 60.0 | 50.0 | 40. |
L(m) | 0.9956 | 0.8049 | 0.5981 | 0.4021 | 0.1958 |
R() | 104.8 | 85.3 | 65.2 | 46.6 | 27.1 |
A.在一块平整木板上依次放复写纸、白纸、导电纸 |
B.导电纸有导电物质的一面应该向上 |
C.连接电源正负极的电极a、b必须与导电物质保持绝缘 |
D.连接电极a、b的电源电压为交流4~6V |
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