a square loop of wire of side 2l carries q current I. what is the magnetic field at the centre of the square? If the square wire is reshaped into a circle would the magnetic field increased or decreased at the centre
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A square loop of side 'a' carries a current I.The magnetic field at the centre of the loop is
December 20, 2019
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Ashish Bhargava
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ANSWER
B
c
=4[
4π
μ
o
a/2
I
(sin45
o
+sin45
o
)]
=
πa
2
2
μ
o
I
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