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Question

Define 'Linear charge density' and surface charge density at a point.

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Solution

Linear charge density:-
The linear charge density is a ratio of a particle's charge dq (situated in a infinite line ) to the infinitesinal line element (thw samll length where the element is situated)
line charge density λ=aqde
total charge q=L0λdl
Surface charge density :-
the surface charge density is a ratio of the charge on the particular surface to the area of surface (ds)
Surface charge density, 6=dqds
total charge, q=s06(r)ds


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