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Formula to calculate the charge in a sphere

  • #1
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1. The problem is: Which charge will a sphere have if it has a diameter of 0.26 meters and produces an electric field of 1030 N/C in the surface?


2. Gauss Law


3. I need the charge of the sphere but i couldn´t find any formula to calculate the charge given the distance (r) and electric field (E)
 

Answers and Replies

  • #2
Chandra Prayaga
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You are supposed to use Gauss's law. So what does Gauss's law say?
 
  • #3
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Is this formula:
E=((1)/(4(3.1416)(8.85X10^-12)) ((q)/(r)^2)

But what is the formula to calculate the q, the charge given the E (electric field) and r (distance)
 
  • #4
kuruman
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Is this formula:
E=((1)/(4(3.1416)(8.85X10^-12)) ((q)/(r)^2)

But what is the formula to calculate the q, the charge given the E (electric field) and r (distance)
The idea is for you to use Gauss's law to find the formula that you need. That's what @Chandra Prayaga indicated in post #2.
 
  • #5
Chandra Prayaga
Science Advisor
649
148
Really, you should start by stating Gauss's law
 

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