An infinitely long straight wire carries current I. Points P and Q are at perpendicular distances R and 3R from the wire. What is (magnetic field at P)/(magnetic field at Q)?

Physics · Magnetic effect of current · biot savart law and magnetic field due to straight conductor ,arc and ring

JEE MainsNEET

An infinitely long straight wire carries current I. Points P and Q are at perpendicular distances R and 3R from the wire. What is (magnetic field at P)/(magnetic field at Q)?

Options