Let be the uniform surface charge density of two infinite thin plane sheets shown in the figure. The electric fields in three different regions and are:

Question

Let  be the uniform surface charge density of two infinite thin plane sheets shown in the figure. The electric fields in three different regions  and  are:

Canvas Classes · Accepted Answer

🧠 Two Equal Positive Sheets — Field Zero Between,  Outside

Both sheets carry . Each makes a field  pointing AWAY from it on both sides. Between the sheets (region II) these two fields point opposite ways and cancel. Outside (regions I and III) they point the same way and add to , directed away from the pair.

🖼️ Visual Sketch

Two parallel infinite sheets, BOTH with surface density , separated by . Region I is to the left of both, II is between them, III is to the right of both.

🗺️ Working

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