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Based on eq. (7), if the force between two current-carrying wires increases by a factor of...

Based on eq. (7), if the force between two current-carrying wires increases by a factor of four and the separation distance between the wires remains unchanged, by how much must the current in the wires have increased


F=ILB=IL?oI =?oLI2, (7) 2?r 2?r

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Answer #1

so if r stayed the same

I^2 wnet up by a factor of 4

that means I went up by a factor of 2

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