Electric Fields
Before understanding electric fields, it is important to understand Coulomb's law.
Coulomb's Law: The force between two point charges is inversely proportional to the square of the distance between the charges and directly proportional to the product of the charges. (Nelson 2008)
Important properties
-Electric forces are repulsive for like charges and attractive for unlike charges
-Electric force is inversely proportional to the square of the radius (the distance between the two charges)
-Newton's third law can be applied. The force exerted by one charge on another charge will be equal in magnitude, but in opposite direction, to the second charge on the first charge.
Electric Field: the region in which a force exerted on an electric charge; the electric force per unit positive charge; unit in N/C (Nelson 2008)
If there was an isolated charge that was away from any other charges, it would produce an electric field. If the charge was close to anther charge, it's field would exert an electric force on the charge. This vector quantity can be represented by the variable E (Epsilon).
Coulomb's Law: The force between two point charges is inversely proportional to the square of the distance between the charges and directly proportional to the product of the charges. (Nelson 2008)
Important properties
-Electric forces are repulsive for like charges and attractive for unlike charges
-Electric force is inversely proportional to the square of the radius (the distance between the two charges)
-Newton's third law can be applied. The force exerted by one charge on another charge will be equal in magnitude, but in opposite direction, to the second charge on the first charge.
Electric Field: the region in which a force exerted on an electric charge; the electric force per unit positive charge; unit in N/C (Nelson 2008)
If there was an isolated charge that was away from any other charges, it would produce an electric field. If the charge was close to anther charge, it's field would exert an electric force on the charge. This vector quantity can be represented by the variable E (Epsilon).
Field lines
The direction of the force an electric field would exert can be represented by using a positive test charge. A positive test charge's field would radiate out from its centre, while a negative test charge would radiate into its centre.
These field lines can be represented in numerous ways, such as they can never cross. They can also show the number of field lines, its magnitude, and density to visualize the electric field. They conjugate closer to the charge as the density increases. As the field intensity increases, so does the field lines.
The direction of the force an electric field would exert can be represented by using a positive test charge. A positive test charge's field would radiate out from its centre, while a negative test charge would radiate into its centre.
These field lines can be represented in numerous ways, such as they can never cross. They can also show the number of field lines, its magnitude, and density to visualize the electric field. They conjugate closer to the charge as the density increases. As the field intensity increases, so does the field lines.
Electric Field Proportionality
-The electric field (E) is inversely proportional to the electric charge (q) and proportional to the electric force (F). The force is parallel to the field, but the direction depends on whether the charge is positive or negative.
-The electric force if proportional to the electric charge. As the magnitude of charge increases, so does the electric force.
-The electric force is inversely proportional to the square of the radius. As the distance between two charges increases, the electric force decreases.
-The electric field is proportional to the electric charge, but inversely proportional to the square of the radius.
These equations are important in the development of the MRI as and MRI uses electric fields, and electric forces. The electric field and force can also be calculated between the hydrogen proton atoms in the body.
-The electric field (E) is inversely proportional to the electric charge (q) and proportional to the electric force (F). The force is parallel to the field, but the direction depends on whether the charge is positive or negative.
-The electric force if proportional to the electric charge. As the magnitude of charge increases, so does the electric force.
-The electric force is inversely proportional to the square of the radius. As the distance between two charges increases, the electric force decreases.
-The electric field is proportional to the electric charge, but inversely proportional to the square of the radius.
These equations are important in the development of the MRI as and MRI uses electric fields, and electric forces. The electric field and force can also be calculated between the hydrogen proton atoms in the body.