The space between two conducting concentric spheres ofradii a and b (a < b) is filled up with homogeneous poorly conductingmedium. The capacitance of such a system equals C. Find the resistivity of the medium if the potential difference between the spheres,when they are disconnected from an external

The space between two conducting concentric spheres ofradii a and b (a < b) is filled up with homogeneous poorly conductingmedium. The capacitance of such a system equals C. Find the resistivity of the medium if the potential difference between the spheres,when they are disconnected from an external

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 46P: An electronic device designed to operate at any temperature in the range from 10.0C to 55.0C...

See similar textbooks

Similar questions

An electronic device designed to operate at any temperature in the range from 10.0C to 55.0C contains pure carbon resistors. By what factor does their resistance increase over this range?
A metal object having a length (10m), cross section area (0.5 mm2), and resistance (0.52) is connected to a potential difference source of 5V at room temperature. If the density of free electrons equals (8×1025 electron/m³), Calculate the thermal velocity.
Consider a resistor of resistivity 3.96 × 10-8 Ω • m. If an electric field of 12 V/m is applied across the resistor and the electron volume concetration in the conductor is 5.16 × 1028 per m3, determine the drift velocity, in mm/s, of the free electron constituting the current.
A block of weakly-conducting material with conductivity sigma has two pieces of metalembedded inside, which form a capacitor with capacitance C.(a) Find the resistance R between the two pieces of metal.(b) At t = 0, the two pieces of metal have a potential difference V0, and at future times t not equal to 0the potential is V (t) = V0e-t/TFind T
Two long coaxial metal cylinders (radii a and b) with a length L, are separated bymaterial of uniform conductivity σ. If they are maintained at a potential difference V, findthe followings:1) current flow (I) and resistance (R)2) If the material is not uniform, let σ=k/s (k is a constant), find I and R.
Consider a hollow spherical conductor of inner radius a and outer radius 3a. The conductivity (sigma) is a function of r, measured from the center of the sphere: sigma = c / r, where a < r < 3a and c is a constant. a) If we apply a potential difference V between it's inner and outer surfaces, with the inner surface at a higher potential, find the resulting current density j and the electric field E as a function of r. b) Find the resistance R of the spherical resistor
Show that, according to the free-electron model of electrical conduction in metals and classical physics, the resistivity of metals should be proportional to where T is the temperature in kelvins.
Using the exact exponential treatment, find how much time is required to charge an initially uncharged 132 pF capacitor through a 73 MΩ resistor to 90% of its final voltage.
Let's say you have a 20 cm long silicon wire, with a diameter of 4 cm. What current flows through this wire if a 1000 V potential difference is applied to the two ends? Please enter your answer in the unit of mA. You can use 2300 Ohm.m for the resistivity of silicon.
If a spherical capatictor, filled with Mica, is in a connected series with a resistor of 600kohms and a DC power source that has a max voltage of 30V, what would be the current in the RC circuit at 6ms. Given: inner radius = 20cm, outer radius = 20.01cm, and assume the capacitor is initially uncharged.
The linear attenuation coefficient for 2.0- Mev
IF a alloy containing a resistivity of 1.1 × 10−6 Ωm. From a roll of wire of 2 mmdiameter, a length 1.5 m long is taken. if a secon piece containing the same length being 1.5 m is connected parallel to the first. A what would its resistance be but also the conductance of the pair.