Science
Primary
Àがわからないので教えて
にし
竜の強
A 240mA
ニクロム線
1長さ 20cm、 断面積 4
B
合 30 m
mA
2mm
A長さ30cm、断面積2mm
14mm
B長さ20cm、断面積2mm'
Answers
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