M asked in Science & MathematicsPhysics · 3 months ago

What does the expression reduce to if we move so far away along the central axis that ?

Update:

What does the expression reduce to if we move P so far away along the central axis that z > R?

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  • NCS
    Lv 7
    3 months ago
    Favorite Answer

    For z >> R,

    E = qz / [4πε₀*(z²+R²)^(3/2)] ≈ qz / [4πε₀*(z²)^(3/2)] = qz / [4πε₀*z³] = q / [4πε₀*z²]

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  • Mark
    Lv 7
    3 months ago

    You get an asymptote (a place where a function doesn't exist, in this case, because you'd be dividing by zero).

    • M3 months agoReport

      what would the formula look like? or is it just 0?

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