1. The problem statement, all variables and given/known data The magnetic field inside a 4.0-cm-diameter superconducting solenoid varies sinusoidally between 8.0 T and 12.0 T at a frequency of 10 Hz. Pt. 1--> What is the maximum electric field strength at a point 1.5 cm from the solenoid axis? Ans.- -> 0.942 V/m Pt. 2--> What is the value of B at the instant E reaches its maximum value? 2. Relevant equations E=cB 3. The attempt at a solution .942/c=3.14*10^-9 Which is the wrong answer. I can't find any other relationships between E and B! Help please!