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AP® Physics C: E & M

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Magnetic Forces that Cancel

APPHEM-FD4BJI

Two long straight current carrying wires are arranged as shown:

Created for Albert.io by Judy Stucky. Copyright 2016. All rights reserved.

At what distance, as measured from Wire A, would the two magnetic fields cancel?

A

$\frac{2}{5} \text { } cm$

B

$\frac{2}{3} \text { } cm$

C

$\frac{3}{2} \text { } cm$

D

$2 \text { } cm$

E

$7.5 \text { } cm$