Physics
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どうして5.0×10のマイナス6になるのですか
R=-
=
30 Q
I 0.40 A
122 断面積 5.0mm²=5.0×10m²であるので,
R=p-より,
S
100 m
-80
•m x
10-6 m²
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最後
=10^-6m^2です