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Final_HB
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Homework Statement
A hollow spherical conducting shell is suspended in air by an insulating string, so that the sphere
is electrically isolated.
The total charge on the conductor is -6 μC. If an additional point charge of +2μC is placed in the hollow region inside the shell, what is the total charge induced on the inside surface of the shell?
If the outside surface of the shell has radius 8 cm, and the electric eld immediately outside the shell?
Homework Equations
The only one I can think that could be half way useful would be:
The Gauss equation ([itex]\oint[/itex] D.dA= Ʃq[itex]_{i}[/itex])
or the charge at the shell version: [itex]\frac{Q}{4\pi ε r^2}[/itex]
The Attempt at a Solution
I don't actually know how much the inital charge actually changes the problem, but it obiously does... otherwise they wouldn't give it Without the 6 micro coulombs, you can just sub into the second formula above for both I am pretty sure, but apart from that, nothing really.
I don't expect a full answer, some help on where to go next would be much appreciated :)