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Problem 28.1: Force between wires

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配置AとBのいずれでも,画面に垂直な5本の直線の導線(赤1本,黄/青4本)に電流(直線電流)が流れ,それらがつくる磁場により各電流に加わる力のベクトルが矢印で示される.どの電流も位置を変えることができる.赤の電流と同じ向きの電流はどれか?説明しなさい. Restart.

Problem authored by Mario Belloni and modified by Anne J. Cox.

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