in a circuit from high electric fields. Nearby there is a coaxial You are an inf

Question

in a circuit from high electric fields. Nearby there is a coaxial You are an information systems engineer trying to isolate sensors in a circuit om high electric fields. Nearby there is a coaxial cable that holds a charge per unit length ofA = 63.2 0 m n a copper filament at the center. This is surrounded by cylindrical metal layer with no net charge as shown in diagram below. The radius of the copper filament is a = 1.6 mm, the inner radius ofthe metal layer isr = 6.3 mm, and the outer radius of the metal layer is C 7.5 mm. What is the magnitude of the electric field at point r 3.90 mm? Give your answer in Newtons per Coulombs. Give your answer to two significant figures for full credit. and the outer radius of t Tb T2

Explanation / Answer

Here for r > ra, the filament will act like infinite wire.

Electric field = 2k lambda/r = 2*9e9*63.2e-6/3.9e-3

= 2.9*10^8 N/C ANSWER

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