Length of the wire that is inside the magnetic field

Thread starter lilaznjewel
Start date Mar 3, 2011
Tags

Field Length Magnetic Magnetic field Wire

AI Thread Summary

To find the length of the wire in a magnetic field, the formula F = B . I . L is used, where F is the magnetic force, B is the magnetic field strength, I is the current, and L is the length of the wire. Given a magnetic force of 6.5 N, a magnetic field of 5.3 T, and a current of 5.0 A, the calculation for length results in L = 6.5 / (5.3 * 5) = 0.25 m. Despite this calculation being correct, the homework system indicates it is wrong. This discrepancy suggests a potential issue with the input format or system settings rather than the calculation itself.

Mar 3, 2011

lilaznjewel

Homework Statement

The magnetic force acting on a wire that is
perpendicular to a 5.3 T uniform magnetic
field is 6.5 N.
If the current in the wire is 5.0 A, what
is the length of the wire that is inside the
magnetic field?
Answer in units of m.

Homework Equations

F = B . I . L

The Attempt at a Solution

L = F / B . I = 6.5 / 5.3 . 5 = 0.25 m

this is what I did, but the homework system says its wrong.

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Mar 4, 2011

supratim1

Gold Member

what you did is correct.

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