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What is the value of B at the instant E reaches its maximum value?

  1. Dec 6, 2007 #1
    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!
     
  2. jcsd
  3. Dec 14, 2007 #2
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