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Question
What is the SI unit of surface charge density?
Options
C m⁻²
C m²
C m⁻¹
C m⁻³
MCQ
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Solution
Surface charge density (σ) represents charge per unit area and has the SI unit of C m⁻² (coulomb per square metre). This distinguishes it from linear charge density (C m⁻¹) and volume charge density (C m⁻³).
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