Question

iranmeah91
F.dA (FLUX) explaination

Answer 1

hello

Answer 2

hey explain what E.dA is in physics if you can
compared to flux in mathematics

Answer 3

they are the same

Answer 4

in the books its E.dA but theres a 1/4pi(something else)

Answer 5

This is electric Field\[E=\frac{ q}{4 \pi \epsilon_0 r^2}\]


Flux in sphere
E* A= \[E=\frac{ q}{4 \pi \epsilon_0 r^2}* 4\pi r^2\]

\[E*A=\frac{ q}{4 \pi \epsilon_0 r^2}* 4\pi r^2\]

\[E*A=\frac{ q}{\epsilon_0}\]

Answer 6

ok kinda clears it up, but solving them you would tackle them same way?

Answer 7

yes, normally you use Gaussian Surface to avoid using Surface Integral

Answer 8

cool thanks, and same with stokes?

Answer 9

if it is not sphere or cylinder , you would have to use those stuff(Div, Stoke)

Answer 10

That's why I asked that question to krebante

Answer 11

yeah, i was just seeing who knows their stuff here, i knew how to do flux n curl and grad very well in MATH, but i have not taken physics yet, which will prob be a little difficult. I just wanted to see who i could go to for physics questions instead of just posting top everyone

Answer 12

applying those can be tricky at times

Answer 13

but i have not done any of those yet in a physics context

Answer 14

yeah ill def ask you if i got questions, thanks.