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AP® Physics C: E & M

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Moderate

Force of Attraction Between Current Carrying Wires

APPHEM-P$H1E4

Two long straight wires, with currents in the same direction, attract each other with a magnetic force $F$.

If the current in one wire is doubled, what will the magnitude of the new force be?

A

$F$

B

$2F$

C

$\frac{F}{2}$

D

$4F$

E

$\frac{F}{4}$