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aliaze1
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Homework Statement
The gap between a pair of parallel infinite copper plates extends from z = 0 to z = W > 0 and is originally occupied by vacuum (ε0, μ0). The plates carry equal and oppositely signed surface charge densities and as a consequence we have a constant electric field E = −4ˆz V/m in vacuum in the gap region.
What would be the new equilibrium values of E, D, and P in the gap region if some amount
of salt were dissolved in the fluid in the gap (64ε0) to raise its conductivity to σ = 4 S/m (conductivity of sea water)?
State the values of E, D, and P after a steady-state equilibrium is reached and briey explain your answer.
Homework Equations
D=εE=ε0*E0+P
P=polarization vector
The Attempt at a Solution
I have the equation J = σE, but I do not know how to relate this to D and P, since I am not given J in the problem
Thanks!
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