物理問題~~求解法~

spiker

A long,thin,straight wire of length L has a positive charge Q distributed uniformly along it. Use Gauss'law to show that the electric field created by this wire at a radial distance r has a magnitude of E=λ/(2πεr),where λ=Q/L.(Hint: For a Gaussian surface,use a cylinder aligned with its axis along the wire and note that the cylinder has a flat surface at either end,as well as a curved surface.)

不是很懂題目要求的東西~~希望各位能幫忙一下 謝謝<(_ _)>

[ 本文最後由 spiker 於 07-10-21 08:28 AM 編輯 ]

appqq

沒學過電子
總之它就是給了一個條件要你用Gauss' law去證明他的磁場
然後他提示好像Gaussann surface會用到跟量筒有關的東西
還叫你注意量筒前後端式平的?