Two circular coils `C_1` and `C_2` each of 100 turns are held in such a way that `C_1
Channel: Doubtnut
Date: 02/08/2020

Two circular coils `C_1` and `C_2` each of 100 turns are held in such a way that `C_1` lies in vertical plane and the other `C_2` in the horizontal plane, with their centres coinciding. The radii of the coils are `r_1=20cm` and `r_2=30cm`. The directions of currents `I_1` and `I_2` passed through the two coils are such that earth's magnetic field at the common centre is neutralised completely. If `H=27*8Am^-1` and angle of dip is `30^@`. Calculate the values of `I_1` and `I_2`.