Three nearly infinitely long hollow copper tubes (think hollow conducting cylinder), shown in gray, each carry currents of 1 = 8.8 A out of the page, while one copper infinitely long rod, labelled x, carries a current Ic into the page. If the net magnetic field at the point P₁ is zero, the current in the rod is ХА 2d P₁ | d |
Three nearly infinitely long hollow copper tubes (think hollow conducting cylinder), shown in gray, each carry currents of 1 = 8.8 A out of the page, while one copper infinitely long rod, labelled x, carries a current Ic into the page. If the net magnetic field at the point P₁ is zero, the current in the rod is ХА 2d P₁ | d |
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