1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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
    The link below has a number of relationships like

    [tex]\nabla \times E =- \frac{\partial B}{\partial t} [/tex]

    http://en.wikipedia.org/wiki/Maxwell%27s_equations" [Broken]
     
    Last edited by a moderator: May 3, 2017
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook