Question

The radiation detector known as a Geiger counter consists of a rb = 39 mm radius cylindrical metal tube sealed at the ends with a ra-1.7 mm radius wire along the axis as shown below. The wire and the cylinder are separated by a low pressure gas whose dielectric strength is 6.4 x 106v/m. What is the maximum potential difference between the wire and the tube? Give your answer in Volts with scientific notation to two significant figures.
Can you answer question correctly