Electric field strength between charged plates help

In summary, the conversation is about a formula for electric potential energy and its relationship to kinetic energy. The formula is E=kq/d2 and the speaker is trying to understand how to involve kinetic energy in the equation. They discuss the relationship between potential difference and electric field, as well as the concept of conservation of energy. The formula for electric potential energy is also discussed, but it is noted that it is for a point charge. The conversation ends with a question about the work done on a charged particle and the Work Kinetic Energy theorem. It is concluded that E=K/qd.
  • #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?
 
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  • #2
Cici2017 said:

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
conscience said:
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
Cici2017 said:
Electric potential energy = qV= kqQ/d

No , this is for a point charge .
 
  • #5
conscience said:
No , this is for a point charge .
Sorry, that's the only formula I know. Can you please tell me? Thank you!
 
  • #6
If the electric field between the charged plates is E , what will be the force on the charged partice +q ?
 
  • #7
conscience said:
If the electric field between the charged plates is E , what will be the force on the charged partice +q ?
F=Eq
 
  • #8
Now if charged particle moves from positive plate to negative , how much is the work done on the particle by the electric force ?
 
  • #9
conscience said:
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
Now what does Work Kinetic Energy theorem say ?
 
  • #11
conscience said:
Now what does Work Kinetic Energy theorem say ?
work done equals to change in KE

so Eqd=K

E=K/qd
 
  • #12
Cici2017 said:
work done equals to change in KE

so Eqd=K

E=K/qd

Yes :smile:
 
  • #13
conscience said:
Yes :smile:

Thank you so much~
 

Related to Electric field strength between charged plates help

1. What is electric field strength between charged plates?

Electric field strength between charged plates is a measure of the force exerted on a charged particle placed between two parallel plates with different charges. It is a vector quantity that is directionally dependent on the charge and separation distance between the plates.

2. How is electric field strength between charged plates calculated?

The electric field strength between charged plates can be calculated by dividing the force exerted on a charged particle by its charge. The formula for electric field strength is E = F/q, where E is the electric field strength, F is the force, and q is the charge.

3. What factors affect the electric field strength between charged plates?

The electric field strength between charged plates is affected by the magnitude of the charges on the plates, the distance between the plates, and the dielectric constant of the material between the plates. Increasing the charge on the plates or decreasing the distance between them will increase the electric field strength.

4. How does the electric field strength between charged plates affect charged particles?

The electric field strength between charged plates exerts a force on charged particles placed between the plates. The force is directly proportional to the charge of the particle and the magnitude of the electric field strength. This can cause the particles to accelerate or change direction depending on the direction of the electric field.

5. What are some applications of the electric field strength between charged plates?

The electric field strength between charged plates has many practical applications, including in capacitor design, particle accelerators, and electrostatic precipitators. It is also important in understanding the behavior of charged particles in electrical systems and in studying the principles of electromagnetism.

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