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

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SUMMARY

The discussion centers on calculating the magnetic field value (B) at the instant the electric field (E) reaches its maximum in a superconducting solenoid with a diameter of 4.0 cm. The magnetic field varies sinusoidally between 8.0 T and 12.0 T at a frequency of 10 Hz. The maximum electric field strength at a point 1.5 cm from the solenoid axis is determined to be 0.942 V/m. The relationship used for the calculation is E = cB, but the user struggles to find the correct value of B using this equation.

PREREQUISITES
  • Understanding of electromagnetic theory, specifically Maxwell's equations.
  • Familiarity with the concepts of electric and magnetic fields.
  • Knowledge of sinusoidal waveforms and their properties.
  • Basic skills in solving equations involving constants like the speed of light (c).
NEXT STEPS
  • Review the derivation of the relationship E = cB in electromagnetic theory.
  • Study the implications of Maxwell's equations on electric and magnetic fields.
  • Explore the concept of electromagnetic waves and their propagation in superconductors.
  • Investigate the behavior of electric and magnetic fields in sinusoidal variations.
USEFUL FOR

This discussion is beneficial for physics students, educators, and professionals working in electromagnetism, particularly those focusing on superconductivity and electromagnetic field interactions.

samee
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Homework Statement


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?


Homework Equations



E=cB

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!
 
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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"
 
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