Question:

A wire in the form of a square of side a carries a current i. Then the magnetic induction at the center of the square wire is (Magnetic permeability of free space μ= 0)

Options :

  • (a) μ0i/2πa
  • (b) μ0i√2/πa
  • (c) 2√2μ0i/πa
  • (d) μ0i/√2πa

Answer :

(c) 2√2μ0i/πa

Answer Steps :

step 1:

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