Question: A disk of radius 2.5 cm carries a uniform surface charge density of 3.6 C/m2. Using reasonable approximations, find the electric field on the axis

A disk of radius 2.5 cm carries a uniform surface charge density of 3.6 μC/m2. Using reasonable approximations, find the electric field on the axis at distances of

(a) 0.01 cm,

(b) 0.04 cm,

(d) 5 cm.

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