[๋Œ€ํ•™๋ฌผ๋ฆฌํ•™] ์ „์ž๊ธฐ ๊ด€๋ จ ํ•„์ˆ˜ ์•”๊ธฐ ๊ณต์‹

์ „์œ„ ๊ด€๋ จ ๊ณต์‹

ํ•˜๋‚˜์˜ ์ ์ „ํ•˜์— ์˜ํ•ด ์ƒ๊ธฐ๋Š” ์ „์œ„

$\large V=\frac{1}{4\pi \epsilon_0}\frac{q}{r}$

 

์—ฌ๋Ÿฌ ์ ์ „ํ•˜์— ์˜ํ•ด ์ƒ๊ธฐ๋Š” ์ „์œ„

$\large V=\frac{1}{4\pi \epsilon_0}\sum_{i=1}^n \frac{q_i}{r_i}$

 

์—ฐ์†์ ์ธ ์ „ํ•˜ ๋ถ„ํฌ

$\large V=\int dV=\frac{1}{4\pi\epsilon_0}\int\frac{dq}{r}$

 

์ „๊ธฐ์žฅ๊ณผ ์ „์œ„

$\large V=-\int \overrightarrow{E}\cdot d\overrightarrow{s}$

 

$\large E_x=-\frac{dV}{dx}$

 

๋ฉด์ „ํ•˜๋ฐ€๋„์™€ ์ „ํ•˜๋Ÿ‰

$\color{#FF0000} {\large dq=\sigma dA=2\pi\sigma rdr}$