• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Finding electric flux

  • Thread starter mr_coffee
  • Start date
1,629
1
Hello everyone. I'm having troubles figuring out part 2 of this problem, and also can u see if i did part 1 correctly? To me it looks like the flux is going to be equal, if the E-field is in the i direction or in the z direction but somthing tells me how can the angle be the same in both cases? THe directions and my work is in the picture below, thanks.
http://img134.imageshack.us/img134/5505/lastscan1nc.jpg [Broken]
 
Last edited by a moderator:
2,208
1
[tex] \int E \cdot dA = \ flux [/tex], with a uniform field it just becomes E dot A. All you have to do is the dot product of your two vectors for both of them. For aprt b) the angle between the two vectors is not 67.4.

Hint, teh first vector lies completely on the xy plane..
 
1,629
1
Ahh Thanks!!
for part (b) it would be flux of 0 wouldn't it? because the E field is perpendicular to the Area vector which is cos(90) = 0. Right?
 

Related Threads for: Finding electric flux

  • Posted
Replies
1
Views
4K
Replies
4
Views
4K
Replies
3
Views
576
Replies
7
Views
7K
  • Posted
2
Replies
27
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top