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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two infinetly long straight parallel wires carry equal currents i in the same direction and are 2 m apart. Magnetic induction at a point which is at same normal distance root 2 m from each wire has magnitude

Two infinetly long straight parallel wires carry equal currents i in the same direction and are 2 m apart. Magnetic induction at a point which is at same normal distance root 2 m from each wire has magnitude

A cylindrical wire of radius R is carrying current uniformly distributed current i over its cross section . If a circular loop of radius r is taken as amperian loop then the variation value of phi B.dl over this loop with radius r of loop will be best represented by