Question

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​

Answer 1

Answer:

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