Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
nilankshi
Group Title
if 2 electrons (a &b) are outside electric field the the potential difference between them will be
 2 years ago
 2 years ago
nilankshi Group Title
if 2 electrons (a &b) are outside electric field the the potential difference between them will be
 2 years ago
 2 years ago

This Question is Closed

nilankshi Group TitleBest ResponseYou've already chosen the best response.2
dw:1315377709320:dw
 2 years ago

the_kid Group TitleBest ResponseYou've already chosen the best response.0
Did you answer your question? The answer is really simple. The electric potential of a negative point charge where there is no electric field (it's the same as 0 at infinity if you do the integral) is the scalar quantity: \[V_E = \frac{1}{4 \pi \epsilon_0}\frac{q_e}{r}\] If we add another point charge, we really just add the potentials. Since we can define any axis, we can define the horizontal axis so that the other charge is on the point, x=a. Then, the potential is \[V_{E_1+E_2} = \frac{1}{4 \pi \epsilon_0}\frac{q_e}{r}+ \frac{1}{4 \pi \epsilon_0}\frac{q_e}{ra} = \frac{q_e}{4 \pi \epsilon_0}\Bigg(\frac{1}{r} + \frac{1}{ra} \Bigg) \] You can reduce that if you would like. To check the result, plug in r = (a/2). Since you are halfway between two equal repulsing charges, you should feel no pressure to move towards either charge and your potential should be zero.
 2 years ago

abhishek.s. Group TitleBest ResponseYou've already chosen the best response.0
the potential difference between them is zero
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.