# Electric Field inside Cylinder (Gauss Law)Watch

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#1
''An infinite cylinder of radius a has a charge distributed uniformly throughout its
volume with charge per unit length λ. Use Gauss’s Law to find the electric field
inside the cylinder of charge.''

Area of Cylinder (excluding lids) = 2(pi)aL

Charge = λL

Electric Flux = Charge/epsilon0

I get where it's going but I don't get how to use Gauss's law to find E. Any help appreciated!
0
5 years ago
#2
Wiki page on Gauss's Law tells you what to do!

Flux = [double surface integral] E*dA
Flux = mod[E]*2piAL
mod[E] = Flux*(2piAL)^-1
mod[E] = q/(2piALe0)
mod[E] = λ/(2piAe0)

Been a while since I did MW stuff like this but it looks about right - don't rely on me though!
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