A Geiger counter is like an electroscope that discharges whenever ions formed
by a radioactive particle produce a conducting path. A typical Geiger counter
consists of a thin conducting wire of radius 0.002 cm stretched along the axis of a
conducting cylinder of radius 2.0 cm. The wire and the cylinder carry equal and
opposites charges of 8 x 10^
–10
C all along their length of 10.0 cm. What is the
magnitude of the electric field at the surface of the wire?

Question

A Geiger counter is like an electroscope that discharges whenever ions formed
by a radioactive particle produce a conducting path. A typical Geiger counter
consists of a thin conducting wire of radius 0.002 cm stretched along the axis of a
conducting cylinder of radius 2.0 cm. The wire and the cylinder carry equal and 
opposites charges of 8 x 10^
–10
 C all along their length of 10.0 cm. What is the
magnitude of the electric field at the surface of the wire?