- #1
wannabee_engi
- 6
- 0
Hello PF, I am having a bit of difficulty understanding this question.
"A thin wire with linear charge density λ is surrounded by a conducting cylindrical shell."
(There is a hollow cylinder with a wire though it)
"If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell?Find the electric field as a function of distance r from the thin wire."
EA = Qenc/ε0
Q = P/V
surface area (A) = 2πrl
I'm having more conceptual difficulty with this question than mathematical. There is a charged wire in a conductor, but the inside of the conductor must have an E field of zero (at equilibrium). How does this happen? How does the charge on the conductor rearrange or move to cancel the E field? Do I assume the charge can't leave the wire?
To find the E(r) I would just use a Gaussian surface at different intervals (I know it's zero until r>R of cylinder). After that the Q enclosed is just constant from the surface of the cylinder shell.
Thanks for the help.
Homework Statement
"A thin wire with linear charge density λ is surrounded by a conducting cylindrical shell."
(There is a hollow cylinder with a wire though it)
"If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell?Find the electric field as a function of distance r from the thin wire."
Homework Equations
EA = Qenc/ε0
Q = P/V
surface area (A) = 2πrl
The Attempt at a Solution
I'm having more conceptual difficulty with this question than mathematical. There is a charged wire in a conductor, but the inside of the conductor must have an E field of zero (at equilibrium). How does this happen? How does the charge on the conductor rearrange or move to cancel the E field? Do I assume the charge can't leave the wire?
To find the E(r) I would just use a Gaussian surface at different intervals (I know it's zero until r>R of cylinder). After that the Q enclosed is just constant from the surface of the cylinder shell.
Thanks for the help.