A straight wire lying in a horizontal plane carries a current of 20 A. (Given, Î¼0...

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Physics

A straight wire lying in a horizontal plane carries a current of20 A. (Given, Î¼0 = 4Ï€ Ã— 10-7 Tm/A)
(a) Find the magnitude of the magnetic field at a perpendiculardistance of 35 cm from it on the plane. How do you know thedirection of the magnetic field?
(b) If the length of the current carrying straight wire is 0.75mand it makes an angle of 60Â° with the Earthâ€™s magnetic field 6Ã—10-5 T, find the force experienced by the wire.
(c) Now, ignore the earthâ€™s magnetic field. The wire (carrying 20A) feels an attractive force of 0.006 N/m due to another parallelwire which lies in the same plane carrying current 25 A. Calculatethe distance between these two wires.

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The current through the wire is I 20A and the valuepermeability of free space is 4x 107TmAa The magnitude of magnetic filed at a distance x from See Answer

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