What is the importance of electrical force?

Answer 1

An electric field can be represented diagrammatically as a set of lines with arrows on, called electric field-lines, which fill space. Electric field-lines are drawn according to the following rules: The direction of the electric field is everywhere tangent to the field-lines, in the sense of the arrows on the lines. The magnitude of the field is proportional to the number of field-lines per unit area passing through a small surface normal to the lines. Thus, field-lines determine the magnitude, as well as the direction, of the electric field. In particular, the field is strong at points where the field-lines are closely spaced, and weak at points where they are far apart. Electric Field intensity It was stated that the electric field concept arose in an effort to explain action-at-a-distance forces. All charged objects create an electric field which extends outward into the space which surrounds it. The charge alters that space, causing any other charged object that enters the space to be affected by this field. The strength of the electric field is dependent upon how charged the object creating the field is and upon the distance of separation from the charged object. In this section of Lesson 4, we will investigate electric field from a numerical viewpoint - the electric field strength. An electric field can be represented diagrammatically as a set of lines with arrows on, called electric field-lines, which fill space. Electric field-lines are drawn according to the following rules: The direction of the electric field is everywhere tangent to the field-lines, in the sense of the arrows on the lines. The magnitude of the field is proportional to the number of field-lines per unit area passing through a small surface normal to the lines. Thus, field-lines determine the magnitude, as well as the direction, of the electric field. In particular, the field is strong at points where the field-lines are closely spaced, and weak at points where they are far apart. Electric Field intensity It was stated that the electric field concept arose in an effort to explain action-at-a-distance forces. All charged objects create an electric field which extends outward into the space which surrounds it. The charge alters that space, causing any other charged object that enters the space to be affected by this field. The strength of the electric field is dependent upon how charged the object creating the field is and upon the distance of separation from the charged object. In this section of Lesson 4, we will investigate electric field from a numerical viewpoint - the electric field strength.

Answer 2

From the knowledge of electric field intensity at any point r--> , we can readily calculate the magnitude and direction of force experienced by any charge q0 held at that point...i.e. F--> = q0E--> (r--> ).

Answer 3

Electric fields are vector fields that affect other electrically charged objects. Every point in the field, which surrounds a single electric charge, is defined by a magnitude and a direction. This magnitude and direction is based on a +1 C test charge acting as the second charge in Coulomb's law. The unit for the E-Field is Newtons (force) / Coulomb (charge). Thus, when a second (or third, or fourth) charge is placed somewhere within the field, a force is exerted on it.

It is important to remember that the E-Field's direction is based on a positive test charge, so the vector arrows point away from the initial charge (since like charges repel). If the second charge is an electron, the direction of the force is 180 degrees from that of the E-Field.

E-Fields cannot exert force on their own because multiple charges must be present to attract or repel each other with equal, but opposite force, according to Newton's Third Law. Thus, the Electric field simply serves as a guideline for determining that force were there to be another charge.

The relationship between E-Field and force becomes more apparent after examining the equations for E-Field and force.

Force = Coulomb's Law = (k)(Q1)(Q2)/(d^2)

E-Field = (k)(Q1)/(d^2)

So, force occurs with the addition of another charge to an existing E-Field.

Answer 4

These are the consequences without electric force.

All the earth's oceans would gush upward and evaporate. DNA strands would be broken so every lving organism would suffocate and die. There would no sun.

Answer 5

The electric field holds atoms together and transmits energy throughout the Universe, S= E^2/z watts/m^2.

Answer 6

I'm stuck on this one too