The figure below shows a current carrying wire located at the origin; the wire c

Question

The figure below shows a current carrying wire located at the origin; the wire carries a current of I = 4.7 A. Points 1, 2, and 3, are all on a circle with radius 16.1 cm which is centered on the origin. (All directions below should be an angle measured counterclockwise from the +x axis to the direction the field points.)

http://www.webassign.net/userimages/oneCurrent.JPG?db=v4net&id=133104

(a) What is the magnitude of the magnetic field generated by the wire at any point on the circle?
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I For parts (b) - (d), assume the wire carries a current directed out of the page.
(b) What is the direction of the magnetic field generated by the wire at point 1?

Explanation / Answer

a) B = magnetic filed = mu*i/(2*pi*r) = 58.38*10^-7 T

b)   in y direction

c) in -x direction

d) in (i - j)/2^0.5 direction

e) in -y direction

f) in x direction

g) in (-i + j)/2^0.5 direction

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