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Capacity numerical

  • #1
1. Homework Statement :

Taking earth to be a spherical conductor of diameter 12.8x10^3 km.its capacity will be?



3. The Attempt at a Solution :
if earth is to be taken as a conductor than i think following formula shall be used
C=Aeo/d
where A=pie r^2
but how i'll calculate distance?(if the above formulae will be used)
 

Answers and Replies

  • #2
881
40
Hi lionel :tongue2:

d is the radius of Earth. But the area is not [itex]\pi r^2[/itex]. You need to find the outer surface area....what is the surface area of a sphere?
 
  • #3
got it....! thanks :D..
 

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