A concentric cable has an external diameter of 12mm and the diameter of the conductor is 8mm. a) If the dielectric constant of the insulation used is 3.5, calculate the capacitance per km length (in pF/km) of the cable. b) If a potential difference of 500V is maintained between the conductors, find the value of electric field intensity (in kV/mm) on the surface of the inner conductor.

A concentric cable has an external diameter of 12mm and the diameter of the conductor is 8mm. a) If the dielectric constant of the insulation used is 3.5, calculate the capacitance per km length (in pF/km) of the cable. b) If a potential difference of 500V is maintained between the conductors, find the value of electric field intensity (in kV/mm) on the surface of the inner conductor.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

The voltage across a membrane forming a cell wall is 78.7 mV and the membrane is 8.52 nm thick. What is the electric field strength? (The value is surprisingly large, but correct.) You may assume a uniform E-field. (V/m)
The electric field inside a 30-cm-long copper wire is 0.010 V/m. What is the potential difference between the ends of the wire?
A dielectric-filled parallel-plate capacitor has plate area A = 10.0 cm2cm2 , plate separation d = 5.00 mmmm and dielectric constant k = 4.00. The capacitor is connected to a battery that creates a constant voltage V = 15.0 VV . Throughout the problem, use ϵ0 = 8.85×10−12 C2/N⋅m2C2/N⋅m2 . The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy U2 of the capacitor at the moment when the capacitor is half-filled with the dielectric. The capacitor is now disconnected from the battery, and the dielectric plate is slowly removed the rest of the way out of the capacitor. Find the new energy of the capacitor, U3. In the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work is done by the external agent acting on the dielectric?
In Figure (a) below, a 11.16 V battery is connected to a resistive strip that consists of three sections with the same cross-sectional areas but different conductivities. Figure (b) gives the electric potential V(x) versus position x along the strip. The horizontal scale is set by xs = 10.16 mm. Section 3 has conductivity 3.008 × 10' (2·m)-1. What is the conductivity of section (a) 1 and (b) 2? x= 0 x= X5 (a) (b) x (mm) (a) Number Units (b) Number Units (A) A
The electric field inside a 70-cm "-long" copper wire is 0.020 V/m. What is the potential difference between the ends of the wire?
A 31 m length of coaxial cable has a solid cylindrical wire inner conductor with a di- ameter of 2.168 mm and carries a charge of 10.02 µC. The surrounding conductor is a cylindrical shell and has an inner diameter of 11.534 mm and a charge of-10.02 C. What is the capacitance of this cable? As- sume the region between the conductors is air. The value of the Coulomb comstant is 8.98755 x 10° N m²/C. Answer in units of nF.
A coaxial cable used in a transmission line has an inner radius of 0.11 mm and an outer radius of 0.65 mm. Calculate the capacitance per meter for the cable. Assume that the space between the conductors is filled with a material with a dielectric constant of 3.0. Number Units
The thickness of the cell membrane is 5 nm, the potential inside the cell is - 65 mV, the potential outside the cell is +10 mV. The electric field strength in the membrane is (kV/m) (give the modulus of magnitude)