## Principles of Electricity and Electromagnetism |

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Page 18

CHAR Cavity ussiga GOU face surface ( a ) Consider a hypothetical closed

Gaussian surface lying completely inside a

. Since the electric field at every point on this surface is zero , it can enclose no

net ...

CHAR Cavity ussiga GOU face surface ( a ) Consider a hypothetical closed

Gaussian surface lying completely inside a

**conductor**, as at the left in Fig . 1 . 12. Since the electric field at every point on this surface is zero , it can enclose no

net ...

Page 21

The potential of

9 ) this is a gridsi , where goi is the surface density of charge on

the distance from each element of charge to a point on

The potential of

**conductor**i due to the charges on**conductor**j is Pijl j . By Eq . ( 1 .9 ) this is a gridsi , where goi is the surface density of charge on

**conductor**j , rij isthe distance from each element of charge to a point on

**conductor**i , and the ...Page 22

If the isolated

negative charge will be induced on the other

induction are in general negative, though in some cases they are zero.

If the isolated

**conductor**has a positive charge and hence a positive potential, anegative charge will be induced on the other

**conductor**. Hence the coefficients ofinduction are in general negative, though in some cases they are zero.

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