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A rod of length H has uniform charge per length λ. We want to find the electric field at point P which is a distance L above and distance R to the right of the rod. Use the diagram below for the next three questions. What is the charge dq in the small length du of the rod? du: +x
Call the integration variable u with u-0 chosen to be at point A and +u defined as down. What is dEy, the y component of the electric field at point P due to the small charge da in the small segment of the rod du shown? Reminder: the length u is the distance from where you chose u-0 to the small segment du. (L2+R2)32 K dq R (L+H-u+R2)32 k da u (u2+R2)32 K dq L 2+R22 (u2+R2)2 L+H-u)+R2)2
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