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Standard XII
Physics
Ampere's Circuital Law
Find B - fiel...
Question
Find B - field at the centre of a spiral of N - Turns carrying a current i and having inner and outer radii a and b respectively.
A
μ
0
N
i
2
(
b
−
a
)
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B
μ
0
N
i
b
−
a
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C
μ
0
N
i
2
(
b
−
a
)
l
n
(
b
a
)
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D
μ
0
N
i
2
b
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