My Math Forum MAgnetic Force

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 October 6th, 2011, 07:34 AM #1 Member   Joined: Oct 2011 Posts: 81 Thanks: 0 MAgnetic Force please explain the concept involved and how to solve this problem : 1. A straight, horizontal wire of mass 10g and length 1.0 m carries a current of 2.0 A. What minimum magnetic field B should be applied in the region so that the magnetic force on the wire may balance its weight?
 October 7th, 2011, 12:40 PM #2 Senior Member   Joined: Jul 2011 Posts: 118 Thanks: 0 Re: MAgnetic Force $F_{grav}=F_{magn} mg=BIl B=\frac{mg}{Il}$
 October 10th, 2011, 06:31 AM #3 Member   Joined: Oct 2011 Posts: 81 Thanks: 0 Re: MAgnetic Force Got it... Thnx Octahedron.

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### a straight horizontal wire of mass 10 mg and length 1.0m carries a current of 2.0A tha minimum magnetic field B which should be applied

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