Recent content by LostinPhysics

If a parallel-plate vacuum capacitor, with its plates separated by a distance of x1 has an amount of energy equal to U stored in it. The separation is then decreased to x2 . What is the energy now stored if the capacitor was disconnected from the potential source before the separation of...

I'm not sure how to use the formula in this problem (C/L = (2*pi*E_0)/(In(r_b/r/a)), A cylindrical air capacitor with a length of L stores an amount of energy equal to W when the potential difference between the two conductors is V. So the magnitude of the charge on each conductor would be 2W/V...

In this problem I am getting stuck on how to find the potential difference. I don't know where to begin. In a Geiger Counter suppose the radius of the central wire is 145 micrometers and the radius of a hollow cylinder is 1.80 cm. What potential difference between the wire and the cylinder...