When the current in a long, straight, air$-$filled solenoid is changing at the rate of the voltage across the solenoid is $0\mathrm{.}600$ V$.$ The solenoid has $1200$ turns and uniform cross$-$sectional area Assume that the magnetic field is uniform inside the solenoid and zero outside, so the result $($see Exercise $30\mathrm{.}11)$ applies. What is the magnitude of the magnetic field in the interior of the solenoid when the current in the solenoid is $3\mathrm{.}00$ A