# Electric Field Help: Solving Problems & Finding Answers

• XxXDanTheManXxX
In summary, the conversation discusses the existence of a uniform electric field between two conducting plates and the motion of an electron released from rest at the negative plate towards the positive plate. It asks for the calculation of the electron's kinetic energy in terms of the field, distance, and charge, as well as the velocity and kinetic energy at impact when the field is given as 10^4 N/C. The equations W= \int \vec{F}\cdot d\vec{l} =\int q\vec{E}\cdot d\vec{l}\Delta V=Ed,~ \Delta U=qEd,~\Delta U=- \Delta KE and a potential for V=-Ed are mentioned in the conversation.
XxXDanTheManXxX
Studying problem and help?

A uniform electric field E exists between two conducting plates separated by a distance d. An electron is released from rest at the negative plate and is attracted to the positive plate.(a) Find its kinetic energy in terns of E, d and the electronic charge. (b) If E = 10^4 N/C find the velocity and kinetic energy at impact.

$$W= \int \vec{F}\cdot d\vec{l} =\int q\vec{E}\cdot d\vec{l}$$

$$\Delta V=Ed,~ \Delta U=qEd,~\Delta U=- \Delta KE$$

It may be V=-Ed, in that case all of the signs in my post are wrong.

## 1. What is an electric field?

An electric field is a physical field that surrounds electrically charged particles. It is a force field that describes the strength and direction of the electric force that a charged particle would experience at any given point in space.

## 2. How do you calculate the electric field?

The electric field is calculated by dividing the force experienced by a charged particle by the magnitude of the charge. The formula for calculating electric field is E = F/q, where E is the electric field, F is the force, and q is the magnitude of the charge.

## 3. What is the unit of electric field?

The SI unit for electric field is Newtons per Coulomb (N/C). This unit represents the force per unit charge that a charged particle would experience in an electric field.

## 4. How is electric field different from electric potential?

Electric field and electric potential are related but different concepts. While electric field describes the force on a charged particle, electric potential describes the potential energy per unit charge at a particular point in an electric field. Electric field is a vector quantity while electric potential is a scalar quantity.

## 5. How do you use electric field to solve problems?

To solve problems involving electric field, you first need to identify the given information and what is being asked. Then, you can use the formula E = F/q to calculate the electric field. It is important to pay attention to the direction and magnitude of the electric field when solving problems. Additionally, understanding the properties of electric field lines can also help in visualizing and solving problems.

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