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=

Answer :

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