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Answer to Question #45160 in Electromagnetism for Anurodh

Question #45160
A horizontal, straight wire carrying 16 A current from west to east is in the earth’s
magnetic field at a place where B is parallel to the surface and points to north with a
magnitude of 0.04 mT.
(i) Determine the magnetic force on a 1 m length of the wire.
(ii) If mass of the wire is 50 g, then what current will allow the wire to be magnetically
supported, that is, magnetic force balances the weight.
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