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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A symmetric star shaped 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 centre of the loop is

A symmetric star shaped 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 centre of the loop is

are held by insulating threads of length L and are in equilibrium as shown in the gigure both with current I Two long current carrying thin wires With threads making an angle θ with the vertical . If wires have mass λ per unit length then the value of I is :