Chapter 23, Problem 43EAP

To determine

(a)

To determine:

An expression for the electric field strength at point P on the axis of the rod at distance $r$ from the center

To determine

(b)

To determine:

Verify your expression if $r\gg L$

To determine

(c)

To determine:

Electric field $E$ at $r=3.0\text{ cm}$ if $L=5.0\text{ cm}$ and $Q\text{=3}.0\text{ nC}$