A current of 3.1 A flows in a straight wire segment length (4 cm)i + (5 cm)j in a uniform magnetic field of strength (0.9 T) i. Find the magnitude of the force on the wire. Answer in units of N.(adsbygoogle = window.adsbygoogle || []).push({});

First I found the magnitude of the length of the wire, [tex] \sqrt .04^2 +.05^2 [/tex] = .0640 m.

Then I used the equation F= IL x B

(3.1)(.0640)(.09)= .0179 N

This isn't right.. I don't really know how to do these problems when both the field and length have directions.. can someone please help?

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# Homework Help: Magnetic force in wire

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