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

Electric charge and elctric filed

  • Thread starter Dx
  • Start date

Dx

Hiya!
Whoa!
vectors, i hate those stinkinh vectors! :wink:
Anyways, I have theis problem and dont know how to solve for it.

A piece of plastic has a net charge of +2.00 microC. How many more protons then eclectrons does this piece of plastic have?

Now i know plastic is a insulator which guessing i would say its smaller than the net charge but i saw this formula for F_net = F_1 +_ F_2 assuming this is for electrostatic Force perhaps, i donno.

How do i solve for this, plz? Whats the formula i use?
whats the answer? Just kidding!

Thanks!
Dx :wink:
 

Alexander

You don't need vectors here. Nor you need to know that plastic is insulator. The only thing you need is a charge of single proton and of single electron. Can you fetch that?
 

dav2008

Gold Member
608
1
Charge on electron(and proton too) is 1.6*10-19 C

So from there you just do factor label.

The 2*10-6 C you were given is the net charge of all the extra protons. (well, not extra protons, just lacking electrons..but u get the picture) From there, just divide that number by the charge of a single proton and you will get your answer.
 

Related Threads for: Electric charge and elctric filed

Replies
6
Views
5K
  • Posted
Replies
1
Views
1K
  • Posted
Replies
4
Views
3K
  • Posted
Replies
1
Views
995
Replies
6
Views
4K
Replies
40
Views
3K
Replies
5
Views
665
Replies
11
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