# Electric Field: Exploring Charges & Forces

• phy77
In summary, an electric field is a physical force field created by charged objects that exerts a force on other charged objects. The strength of the electric field is measured in newtons per coulomb (N/C) and is directly related to the electric force experienced by a charged object. Electric fields are used in various everyday applications such as electronics, power transmission, and medical devices.
phy77
I am a little confused with an electric field, Is it the kinda force between two particles positive and negative, or the force between two like charges? Then why is it that a positive charged particle can determine the direction of the field? i am a bit confused

thankyou

Last edited:
Well an electric field is defined as any region in which a charged body experiences an electric force. Convention. The convention that physicists use is that they use a +ve test charge to determine the direction of an electric field.

[Electric field strength is given by E=F/Q]

An electric field is a region in space where electrically charged particles experience a force. This force is the result of the interaction between two charged particles, which can be either positive or negative. The direction of the electric field is determined by the direction in which a positive charged particle would experience a force if it were placed in that field. This means that a positive charged particle can determine the direction of the field because it is the one experiencing the force. However, the electric field itself is not the force between two particles, but rather the influence that one charged particle has on another. It is important to note that the direction of the electric field is always from positive to negative charges. I hope this clarifies your confusion.

## 1. What is an electric field?

An electric field is a physical field that surrounds a charged object or group of charged objects. It is a force field that exerts a force on other charged objects within its vicinity.

## 2. How is an electric field created?

Electric fields are created by charges. A positive charge creates an electric field that points away from it, while a negative charge creates an electric field that points towards it. The strength of the electric field is determined by the magnitude of the charge.

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

The strength of an electric field is measured in units of newtons per coulomb (N/C). This unit represents the force experienced by a unit charge (coulomb) placed within the electric field.

## 4. What is the relationship between electric field and electric force?

Electric force is the force that a charged object experiences in an electric field. The magnitude of the electric force is directly proportional to the magnitude of the electric field and the magnitude of the charge of the object. This relationship is described by Coulomb's law.

## 5. How is electric field used in everyday life?

Electric fields are used in many everyday applications. Some examples include the functioning of electronic devices such as computers and phones, the transmission of electricity in power lines, and the operation of motors and generators. Electric fields are also used in medical applications such as MRI machines and defibrillators.

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