A symmetric star shaped conducting wire loop is carrying a steady state current I as shown in the figure. The distance between the diametrically opposite vertices of the star is 4a. The magnitude of the magnetic field at the center of the loop is

Question:

Options :

(a) u0I/4πα 6[√3-1]
(b) u0I/4πα 6[√3+1]
(c) u0I/4πα 3[2-√3]
(d) u0I/4πα 3[√3-1]

Answer :

(a) u0I/4πα 6[√3-1]

Answer Steps :

step 1:

step 2:

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