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woleraymond
Group Title
An infinite charged sheet has a surface charge density of 1 x 10^7 Cm^2 .How far apart are the equipotential surfaces whose potentials differ by 5volts?
 one year ago
 one year ago
woleraymond Group Title
An infinite charged sheet has a surface charge density of 1 x 10^7 Cm^2 .How far apart are the equipotential surfaces whose potentials differ by 5volts?
 one year ago
 one year ago

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henpen Group TitleBest ResponseYou've already chosen the best response.0
Work out the electric field at any point, and use the fact that potential energy is \[\int\limits_{\infty}^{a}F(x)dx\](i.e. a unit charge is dragged from infinity, parallel to the field lines, to a)
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
Use the fact that the electric field is the same everywhere (think of the electric flux through a cylinder on the plane).
 one year ago

Mikael Group TitleBest ResponseYou've already chosen the best response.1
Simpler when the field is constant which it is here  always for infinite plane \[\Delta V = E*\Delta x\]
 one year ago

Mikael Group TitleBest ResponseYou've already chosen the best response.1
so 5 = E*Delta x find E and then it will help find\[\Delta x\]
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
Yes, basically my integral simplifies to \[U=Fx\] As F is not actually a function of x. Evaluated from infinity to a, or more simply the change in PE (from b to a), yields Mikael's result.
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
dw:1347905879599:dw
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
http://www.youtube.com/watch?v=ldJhMDuOGxY
 one year ago

woleraymond Group TitleBest ResponseYou've already chosen the best response.0
@RaphaelFilgueiras pls can you be more legible with ur formulas.....@benpen thanks for the link
 one year ago

woleraymond Group TitleBest ResponseYou've already chosen the best response.0
but the value i get is 8.98 x 10 ^ 4 m @RaphaelFilgueiras any clues
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
it's close my is 8.85x10^4
 one year ago
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