Two parallel wires separated by$4\mathrm{.}4$cm repel each other with a force per unit length of$2\mathrm{.}3104$N$/$m$.$ The current in one wire is$4\mathrm{.}5$A$.$

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$($a$)$ Find the current in the other wire.

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$($b$)$ Are the currents in the same direction or in opposite directions?

$$ Same$/$Opposite

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$($c$)$ What would happen if the direction of one current were reversed and doubled?

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