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What is the electric field at a point 4 cm from the axis of a cylindrical shell?

  • Thread starter pcml100
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  • #1
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Homework Statement



A cylindrical shell of radius 9.9 cm and length 286 cm has its charge density uniformly distributed on its surface. The electric field intensity at a point 23 cm radially outward from its axis (measured from the midpoint of the shell ) is 44800 N/C.
Given: ke = 8.99 × 10^9 N · m^2/C^2,

What is the electric field at a point 4 cm from
the axis?

Homework Equations



E = (Keq)/r2

The Attempt at a Solution



I kind of don't even know where to start

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
104
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First get hold of some good book and clarify the theory part. Then think of attempting the problem.
 
  • #3
23
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Thanks for your incredibly helpful and polite answer Einstein. I figured it out, it just confused me because I had done around 15 problems by the time I got to this one so I was exhausted. This forum has some really stuck up people if I may say so...
 
  • #4
104
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you may say so....
I didnt mean to be 'impolite'. So i do apologize!!

I kind of don't even know where to start
[/b]
But next time before posting a problem, try it out at least an hour, and give a decent attempt to the solution. The mentors will help you to figure out where you have done a mistake, or where you are stuck!!
 
  • #5
SammyS
Staff Emeritus
Science Advisor
Homework Helper
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Thanks for your incredibly helpful and polite answer Einstein. I figured it out, it just confused me because I had done around 15 problems by the time I got to this one so I was exhausted. This forum has some really stuck up people if I may say so...
However, Most people who post questions asking for help are actually polite. A few are not so polite.
 

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