Question

A very long, straight horizontal wire carries a current such that 8.25×1018 electrons per second pass...

A very long, straight horizontal wire carries a current such that 8.25×1018 electrons per second pass any given point going from west to east.

a)What is the magnitude of the magnetic field this wire produces at a point 5.00 cm directly above it?

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Answer #1

Magnetic field for infinitely long straight conductor

Given

I = (8.25x1018)x(1.6x10-19) = 1.32 A

?o = 4? x 10 -7

r = 5x10-2 m

The magnitude of the magnetic field this wire produces at a point 5 cm directly above is 5.28 x 10-6T

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