Chapter 2445P24.61The field direction is radially outward perpendicular to the axis. The field strength depends on rbutnot on the other cylindrical coordinates θor z. Choose a Gaussian cylinder of radius rand length L.If ra<,ΦEq=∈in0andErLL20πλbg=∈Er=∈20or=∈<20r±af.If arb<<,LLraL2220λρej=+−∈=∈λρπr02±.If rb>,LLbaL20=∈=∈>bar02±.P24.62Consider the field due to a single sheet and let E+and E−represent the fields due to the positive and negative sheets. Thefield at any distance from each sheet has a magnitude given byEquation 24.8:EE==∈σ20.(a)To the left of the positive sheet,
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