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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two identical wires A and B , each of length ‘l’, carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side ‘a’ . If BAandBB are the values of magnetic field at the centres of the circle and square respectively , then the ratio BA/BB is :

Two identical wires A and B , each of length ‘l’, carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side ‘a’ . If BAandBB are the values of magnetic field at the centres of the circle and square respectively , then the ratio BA/BB is :

are held by insulating threads of length L and are in equilibrium as shown in the gigure both with current I each of length 'l' Two identical wires A and B 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 :