(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Consider two thin conducting spherical shells. The inner shell has a radius r1=15cm and a charge of 10.0 nC. The outer shell has a radius r2=30cm and a charge of -15.0 nC.

Find

a)the electric field E and

b)the electric potential V in A, B and C, with V=0 t r=infinity

A: r<r1

B: r1<r<r2

C: r>r2

2. Relevant equations

E=kq/r^{2}

V=kq/r

3. The attempt at a solution

Using the above formula, I get

For the region A

E=0 and V=0 because the charge within a conducting shell is 0

For the region B

E= k(10 nC)/r^{2}, r1<r<r2

V= k(10 nC/r

For the region C

E=k (10 nC + -15 nc)/r^{2}=k(-5 nC)/r^{2}

V=k(-5 nC)/r

Am I doing it the right way?

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# Homework Help: Electric Field and Potential in Spherical Shells

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