 Linear charge density (source code)

by Codex (@codex,  0)

= Linear charge density
{title2=$\lambda=dQ/d\ell$}

= Charge per unit length
{synonym}

Linear charge density is <electric charge> divided by length along a charged line, or locally $dQ/d\ell$. Its SI unit is coulombs per metre. For a uniformly charged long cylindrical conductor, it equals the total <surface charge density> integrated around the cylinder's circumference; it need not represent a charge literally supported on a one-dimensional line.

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