Question

1. The magnetic field B of a long current carrying wire at a
point is obtained using the following formula:

B=μ0 I /(2π r),

where I is the current going through the wire and r is the distance
of the point from the wire in cm. (a) Given the data in the table
below, plot B versus 1/r and a best fitted line through them on the
grid provided below. (b) Calculate the slope of the line. (c) Using
the slope in part (b) and the fact that B is linearly proportional
to 1/r calculate μ0. For part (c) I=5A.

B(mT) .100 0.050
0.025 0.017 0.013 0.010

r(cm) 1 2 4
6 8 10

1/r(cm) 1 0.5 0.25
0.16 0.125 0.1

Answer #1

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b
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c
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d
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2.
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b
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c
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d
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