Is Postive Electric Field at high potential or Negative electric field?

  • Thread starter khamaar
  • Start date
  • #1
14
0

Main Question or Discussion Point

What i mean to say is, for example we have two plates, one positive the other negative...

By convention the positive is said to be at a higher potential than the negative one..

But what if i put an electron between these two plates. The electron would obviously go towards the positive terminal.

How is this possible?...a thing going from lower potential to higher potential?? I was taught that things spontaneously go from Higher to lower!!


Thanks in advance
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
250
welcome to pf!

hi khamaar! welcome to pf! :wink:
How is this possible?...a thing going from lower potential to higher potential?? I was taught that things spontaneously go from Higher to lower!!
no, things don't spontaneously go from higher potential to lower

they spontaneously go from higher potential energy to lower …

and electric potential is potential energy per charge

(just like gravitational potential being potential energy per mass)

so an electron (with negative charge) going to higher potential does go to lower potential energy! :smile:
 
  • Like
Likes 2 people
  • #3
14
0
ohhhhh...thanks, i understand..but now there is one other problem.

An electron is left in a positive electric field. Does it go Up the potential gradient? or down the potential gradient?..

thnx in advance...
(PS. this is a question, which i read in some book today)
 
  • #4
tiny-tim
Science Advisor
Homework Helper
25,832
250
An electron is left in a positive electric field. Does it go Up the potential gradient? or down the potential gradient?..
well, up is to a higher electric potential, sooo … ? :smile:
 
  • #5
14
0
so an electron moves up the potential gradient in an electric field?
 
  • #6
tiny-tim
Science Advisor
Homework Helper
25,832
250
yup! :biggrin:
 

Related Threads on Is Postive Electric Field at high potential or Negative electric field?

Replies
2
Views
445
  • Last Post
Replies
9
Views
3K
Replies
11
Views
2K
Replies
4
Views
12K
  • Last Post
Replies
1
Views
3K
Replies
7
Views
16K
Replies
15
Views
3K
  • Last Post
Replies
3
Views
1K
Replies
1
Views
2K
Replies
15
Views
399
Top