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

How do you find electric field given only time and distance?

  • Thread starter maddieamy
  • Start date
1
0
1. Homework Statement
Two charged plates are 2mm apart. An electron escapes from the negatively charged plate and reaches the positively charged plates in 1.2x10^-8 seconds. Find the electric field between the plates.

2. Homework Equations
E=V/d
eV= + or - 1.6x10^-19 C

3. The Attempt at a Solution
The only way I could think of doing this is below but I'm not confident in my answer whatsoever.
(unsure how to find velocity, too, given the numbers in the problem)
V= (1.60x10^-19C )x(1.2x10^-8s)
V= 1.92x10^-27

E= (1.92x10^-27)x(0.002m)
E= 3.84x10^-30 N/C
 

gneill

Mentor
20,489
2,615
Can you explain the steps in your attempt? What equation did you employ to calculate V? How do the units work?

When you calculate E, what equation are you using? You appear to be multiplying a voltage by a distance ???
 

Want to reply to this thread?

"How do you find electric field given only time and distance?" You must log in or register to reply here.

Related Threads for: How do you find electric field given only time and distance?

Replies
1
Views
143
Replies
1
Views
898
  • Posted
Replies
15
Views
5K
Replies
5
Views
4K

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