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24 Mar 2008 17:40:33 IST

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potential,field,capacitance inside hollow and solid sphere

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potential,field,capacitance inside hollow and solid sphere

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Anshuman Johri

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Joined: 27 Jan 2007

Posts: 559

25 Mar 2008 10:00:50 IST

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Solid Sphere

Pootential = i think potential of a particular point is not defined (not sure abt this)

Field = 0 --- Conducting solid sphere=> total charge remains on the surface. Using gauss law enclosed charge =0 inside the sphere

= kQ/r^2 for r>=R (i.e. outside the sphere)

Capacitance=0 -- coz a solid conduction sphere will never store charge

Hollow Shpere

Potential = kQ/R

Field = 0 for r = kQ/r^2 for r>=R

Capacitance= 4piER

gokul subramanian

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25 Mar 2008 10:05:18 IST

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E inside= 1/4

q/R^3 *r where R is radius r is dist from center
E surface = k*q/R^2
Eoutside k*q/r^2

V outside= k*q/r
V surface=k*q/R
V inside= k* q/R*[3/2-(1/2)r^2/R^2]
all this 4 solid sphere

gokul subramanian

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25 Mar 2008 10:07:20 IST

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hollow
E inside=0
E outside=Kq/r^2
E surface=Kq/R^2

V inside=Kq/R=V surface
V outside=Kq/r

Bhupesh Mohanty

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Joined: 29 Dec 2006

Posts: 1037

26 Mar 2008 21:22:43 IST

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I believe that the answers posted by you friends explains it all what you have asked for anything specific let me know .

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