A copper wire carries a current from west to east. Assume the magnetic field of the earth at this location to be horizontal and directed from south to north with a magnitude of 5.0E-5 T. How much current would make the magnetic force on the wire equal in magnitude to the gravitational force on the wire for a length of 40 m of wire? The density of copper is 8.92 x103 kg/m3 and the cross-sectional area of the wire is 6.0E-6 m?. Give your answer in amperes, correct to three decimal places.

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A copper wire carries a current from west to east. Assume the magnetic field of the earth at this location to be horizontal
and directed from south to north with a magnitude of 5.0E-5 T. How much current would make the magnetic force on the
wire equal in magnitude to the gravitational force on the wire for a length of 40 m of wire? The density of copper is 8.92
x103 kg/m3 and the cross-sectional area of the wire is 6.0E-6 m2. Give your answer in amperes, correct to three decimal
places.
Answer:
Transcribed Image Text:A copper wire carries a current from west to east. Assume the magnetic field of the earth at this location to be horizontal and directed from south to north with a magnitude of 5.0E-5 T. How much current would make the magnetic force on the wire equal in magnitude to the gravitational force on the wire for a length of 40 m of wire? The density of copper is 8.92 x103 kg/m3 and the cross-sectional area of the wire is 6.0E-6 m2. Give your answer in amperes, correct to three decimal places. Answer:
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