Two toroidal solenoids are wound around the same form so that the magnetic field of one passes through the turns of the other. Solenoid $1$ has $730$ turns and solenoid $2$ has $440$ turns. When the current in solenoid $1$ is $6\mathrm{.}50$ AA$,$ the average flux through each turn of solenoid $2$ is $4\mathrm{.}00102$ WbWb$.$