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AP® Physics C: E & M

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Moderate

Force of Repulson on Two Current Carrying Wires

APPHEM-1QSRBD

Two long straight parallel wires have currents and separations as shown in the diagram:

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Calculate the magnitude of the repulsion force per unit length, $\cfrac { F }{ \Delta l } $.

A

$2.7\times{10}^{-7} \ N/m$

B

$6.7\times{10}^{-6} \ N/m$

C

$5.3\times{10}^{-5} \ N/m$

D

$2.7\times{10}^{-5} \ N/m$

E

$1.1\times{10}^{-4}\ N/m$