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To find the components of the electric field at P , you need to divide the semicircle into infinitesimal segments ds , each of which is a short circular arc of radius a and angle dθ . What is the length of such a segment?

To find the components of the electric field at P you need to divide the semicircle into infinitesimal segments ds each of which is a short circular arc of radi class=

Respuesta :

Answer:

The length of an arc segment:

S = a Θ        where a = radius and Θ the angle subtended by the arc

Thus dS = a dΘ

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