Electric charge and fields: uniform electric field

So, in this case, E=F/q = 6N / 3x10^-6C = 2x10^6 N/C.In summary, the magnitude of the electric field is 2x10^6 N/C.
  • #1
Dx
A force of 6N acts on a charge of 3 microC when placed in a uniform electric field. what is the magnitude of the electric field?

I have
E = k(Q/r^2... k=9x10^9 * (Q,charge=3x10^-9) / (?)^2

ths can't be the right formula caus e wheres r^2?
Dx [?]
 
Physics news on Phys.org
  • #2
Originally posted by Dx
A force of 6N acts on a charge of 3 microC when placed in a uniform electric field. what is the magnitude of the electric field?

I have
E = k(Q/r^2... k=9x10^9 * (Q,charge=3x10^-9) / (?)^2

ths can't be the right formula caus e wheres r^2?
Dx [?]

You're right, it is not the correct formula. The formula you quoted is only for an electric field due to a point charge. That's not what you have here; you have a uniform electric field.

The relationship between force and electric field is F=qE.
 
  • #3
= 6N

The formula for electric field strength in a uniform electric field is E = F/q, where F is the force acting on the charge and q is the charge itself. In this case, we know that F = 6N and q = 3 microC = 3x10^-6C. Plugging these values into the formula, we get E = 6N / 3x10^-6C = 2x10^6 N/C. This is the magnitude of the electric field strength in this scenario. The distance, r, is not needed in this formula as it is assumed to be constant in a uniform electric field.
 

1. What is an electric charge?

An electric charge is a fundamental physical property of matter that causes it to experience a force when placed in an electric field. It can be positive or negative, and its unit of measurement is the coulomb (C).

2. What is a uniform electric field?

A uniform electric field is one in which the electric field strength and direction are constant at all points. This means that the electric field lines are evenly spaced and parallel to each other.

3. How is the strength of an electric field measured?

The strength of an electric field is measured in newtons per coulomb (N/C). This is the amount of force that a unit charge would experience when placed in the electric field.

4. What is the relationship between electric charge and electric fields?

Electric charge and electric fields are closely related. Electric charges create electric fields, and the strength of the electric field is determined by the amount and distribution of electric charges in the vicinity.

5. How does an electric field affect charged particles?

An electric field exerts a force on charged particles, causing them to accelerate in the direction of the electric field lines. The magnitude and direction of the force depend on the charge and the strength and direction of the electric field.

Similar threads

  • Introductory Physics Homework Help
Replies
4
Views
2K
  • Introductory Physics Homework Help
Replies
2
Views
997
  • Introductory Physics Homework Help
Replies
11
Views
1K
  • Introductory Physics Homework Help
Replies
17
Views
372
  • Introductory Physics Homework Help
Replies
9
Views
237
  • Introductory Physics Homework Help
Replies
3
Views
767
  • Introductory Physics Homework Help
Replies
2
Views
517
  • Introductory Physics Homework Help
Replies
2
Views
1K
  • Introductory Physics Homework Help
Replies
14
Views
620
  • Introductory Physics Homework Help
Replies
32
Views
2K
Back
Top