Home » Ask & Discuss » Physics. » Electricity « Back to Discussion

Electricity

Hot goIITian

Joined:	2 Dec 2007
Post:	124

11 Jul 2008 14:38:20 IST

0 People liked this

413

Concentric Spherical Shells Question, Experts, Rates Assured

None

06. Two concentric spherical shells of radii a and 3a are connected to a cell of emf V as shown in the figure. Find,a) Electrostatic energy stored between the shells.b) Electrostatic force on unit area of outer shell.c) Electric intensity and potential at midpoint between the two surfaces assuming electric potential of outer shell as zero.

Share this article on:

Comments (1)

Anant Kumar

Forum Expert

Joined: 10 Jul 2008

Posts: 598

11 Jul 2008 21:36:56 IST

Like 2 people liked this

The capacitance of a spherical capacitor with inner radius a and outer radius b is given by

assuming the dielectric between the spheres to be air.

In the present case b = 3a, and so the capacitance is

Since the voltage applied is V. Hence the electrostatic energy becomes

there will be a 2 in the square box

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team