Conducting sphere Definition and 115 Threads

A thin charged (charge=Q) ring of radius a centered on the z axis lies in the x-y plane. The potential outside the ring is given. Now the ring is placed inside a grounded conducting spherical shell of radius b > a. What is the potential inside the ring and between the ring and the sphere...

Homework Statement Show that the energy associated with a conducting sphere of radius R and charge q surronded by a vacuum is given by u=kq^2/(2R). Homework Equations The Attempt at a Solution

Let me preface this as this is my first post on this forum. I'm a physics major at Virginia Tech and I've lurked the forum for a while to help understand concepts that may not be intuitive initially. I'm stuck on this one concept, so I decided to give posting a shot. Without further ado...

Homework Statement Link to assignment The fact that it is imperfectly conducting is supplied so that the charges in the sphere will move with the same angular velocity. The B-field induced by the moving charges will be disregarded. Homework Equations...

Homework Statement A 32 cm diameter conducting sphere is charged to 500 V relative to V=0 and r = infinity. (a) What is the surface charge density sigma? (b) At what distance will the potential due to the sphere be only 10 V? Homework Equations The Attempt at a Solution I...

Homework Statement Consider a solid conducting sphere with a radius 1.5 cm and charge -4.4pC on it. There is a conducting spherical shell concentric to the sphere. The shell has an inner radius 3.7 cm and outer radius 5.1 cm and a net charge 27.4 pC on the shell. A) denote the charge on...

I've solved an electrostatics problem where we have to find the surface charge density on a conducting sphere in a previously uniform E-Field, but I had to assume that V=0 on the surface of the cylinder, and I'm not sure why this is the case. I know that E=0 inside, so the potential should be...

A grounded sphere of radius 'a' is placed between point charges q1 and q2 with its centre O lying on the straight line joining q1 and q2. The distances of q1 and q2 from O are 2a and 4a respectively. Find the condition that the charge q2 experiences a repelling force. My question: How do I...

Hi all, I am having some troubles with some Electromagnetism questions. First of all can someone please explain the basics behind Electric fields. The question asks "What is the electric field around a conducting sphere of radius R carrying a charge Q". Does this imply that because the sphere...

Hello, I've been working my way through Griffiths' "Introduction to Electrodynamics" book, and I'm slightly confused by Problem 3.20. For those of you without a copy of this book, given a conducting sphere of radius R and charge Q in a uniform electric field of strength E0, what is the...

Hi, i appreciate your help. The problem reads an isolated charged conducting sphere with radius 12cm creates an electrical fiels of 4.90^4 21cm away from the center. find the capacitance and charge density? I used the formula C= (a*b)/(Ke*(b-a)) but i get the wrong answer what am i...

"A solid conducting sphere with radius R carries a posative total charge Q. The sphere is surrounded by an insulating shell with inner radius R and outer radius 2R. The insulating shell has a uniform charge density \rho a) find the value of \rho so that the net charge of the entire system is...

Here's the problem that I have been trying to solve: A solid conducting sphere of radius 20cm is concentrically placed inside a spherical shell of inner radius 30 cm and outer radius 40cm. A Charge of 20uC is placed on the inner sphere, and a charge of -10uC is placed on the outer conductor...

A conducting sphere that carries a total charge of 6 micro C is placed at the center of a conducting spherical shell that also carries a total charge of 6 micro C . (a) Determine the charge on the inner surface of the shell. (b) Determine the total charge on the outer surface of the shell...

In one of our exercises, there is a conducting sphere (S2) with a cavity inside (S1). A point charge is placed inside the cavity. We were told to try and find the electric field outside by following a set of steps. 1. Imagine that S2 is grounded. In that case, the charge on the cavity wall...