Electric field strength between charged plates help

  • Thread starter Cici2017
  • Start date
  • #1
Cici2017

Homework Statement


Screen Shot 2017-08-03 at 8.31.03 pm.png

Homework Equations




The Attempt at a Solution


E=kq/d2

how do I involve the kinetic energy K in the equation?
 

Answers and Replies

  • #2
232
36

Homework Statement


View attachment 208220

Homework Equations




The Attempt at a Solution


E=kq/d2

how do I involve the kinetic energy K in the equation?
What is the relationship between potential difference between the plates and electric field between the plates ?

How do you relate potential difference and electric potential energy ?

Think in terms of conservation of energy .

OR

Use Dimensional Analysis
 
  • #3
Cici2017
What is the relationship between potential difference between the plates and electric field between the plates ?

How do you relate potential difference and electric potential energy ?

Think in terms of conservation of energy .

OR

Use Dimensional Analysis
Electric potential energy = qV= kqQ/d

Is this equal to the kinetic energy K?
 
  • #4
232
36
Electric potential energy = qV= kqQ/d
No , this is for a point charge .
 
  • #5
Cici2017
No , this is for a point charge .
Sorry, that's the only formula I know. Can you please tell me? Thank you!
 
  • #6
232
36
If the electric field between the charged plates is E , what will be the force on the charged partice +q ?
 
  • #7
Cici2017
If the electric field between the charged plates is E , what will be the force on the charged partice +q ?
F=Eq
 
  • #8
232
36
Now if charged particle moves from positive plate to negative , how much is the work done on the particle by the electric force ?
 
  • #9
Cici2017
Now if charged particle moves from positive plate to negative , how much is the work done on the particle by the electric force ?
W=Eqd
 
  • #10
232
36
Now what does Work Kinetic Energy theorem say ?
 
  • #11
Cici2017
Now what does Work Kinetic Energy theorem say ?
work done equals to change in KE

so Eqd=K

E=K/qd
 
  • #13
Cici2017

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