A Geiger tube includes of two elements, a long metal cylindrical shell and a long straight metal wire running down the central axis. Model the tube as if together the wire and cylinder are infinitely long. The central wire is positively charged and the outer cylinder is negatively charged. The potential difference among the wire and the cylinder is 0.99 kV. Assume that the cylinder in the Geiger tube consists of an inside diameter of 3.80 cm and the wire consists of a diameter of 0.464 mm. The cylinder is grounded so its potential is equivalent to zero.
(i) Determine the radius of the equipotential surface that consists of a potential equivalent to 495 V? Is this surface nearer to the wire or to the cylinder?