Calculating Electric Fields in a Gieger Counter

AI Thread Summary
To calculate the electric field at the surface of the wire in a Geiger counter, the relevant formula is E = λ/(2πE₀r), where λ is the linear charge density and E₀ is the permittivity of free space. The potential difference of 890 volts between the wire and the cylinder can be used to determine the electric field by integrating the electric field over the distance from the wire to the cylinder. The tension in the wire and its dimensions, including the inner diameter of the cylinder and the wire's outer diameter, are crucial for accurate calculations. Clarification on the specific goals of the calculations is necessary for further assistance. Understanding these principles will aid in solving the problem effectively.
choole
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A particular Gieger counter has a metal cylinder with an inner diameter of 2 cm along whose axis is stretched a wire with 44 N of tension. The potential difference between the wire and the cylinder is 890 volts. The wire has a length of 6 cm and an outer diameter of 1.5 X 10-4 cm.
A. To find the electric field at the surface of wire?
B To find the electric field at the inner surface of the cylinder

Vf - Vi = int(E dot ds) from radius of wire to cylinder.
and E = lemda/2piE0r

i tried solving like this but i didn't get the answer. Please help
 
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It is not clear to me what your goal is? What are you looking for?
 
Integral said:
It is not clear to me what your goal is? What are you looking for?
To find the electric field at the surface of the wire?
 

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