1. The problem statement, all variables and given/known data For a long solenoid, the magnetic field strength within the solenoid is given by the equation B = 5.0t T, where t is time in seconds. If the induced electric field outside the solenoid is 11 V/m at a distance 2.0m from the axis of the solenoid, find the radius of the solenoid. 2. Relevant equations E_inside = r/2 |dB/dt| 3. The attempt at a solution I know how to calculate the electric field outside the solenoid, but how can I associate the magnetic field inside of it with the electric field outside?