I'm so confused right now as I have come across questions regarding the E.F of a conducting plate of charge.However some questions use =σ/2ε0 whereas others use =σ/ε0 and I genuinely don't know why and when to choose which.
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Possible duplicates: https://physics.stackexchange.com/q/65191/2451 and links therein. – Qmechanic Nov 14 '23 at 13:35