Uniform field between parallel conducting plates (E = σ/ε₀ (between oppositely charged plates))

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E = σ/ε₀ (between oppositely charged plates)

What each symbol means

SymbolWhat it stands for
σMagnitude of charge per unit area on one plate (equal and opposite)

When to use this

Two infinite parallel conducting plates with +σ and −σ facing; field between is superposition of two σ/(2ε₀) adding.