electrical fields

Question 1

name three similarites between electrical and gravitational fields

Answer 1

both follow inverse square laws
both use field lines to represent
both have equipotential surfaces

Question 2

what does coloumb’s law state?

Answer 2

magnitude of the force between
two point charges in a vacuum is
directly proportional to the product of their charges inversely proportional to the
square of the distance between the charges.

Question 3

what is electric field strength at a point in the field

Answer 3

the force per unit charge on a positive test charge placed at that point

Question 4

what does the electric field between two oppositely charged parallel plates depend on

Answer 4

the concentration of charge on the surface of the plates.

Question 5

what is the electrical potential at a certain position in any electric field

Answer 5

the work done per unit positive charge on a positive charge when it is moved from inifinity to that position

Question 6

what is an equipotential

Answer 6

a line or surface in a field along which the electric or gravitational potential is constant

Question 7

what is the potential gradient

Answer 7

the chane of potential per unit change of distance in a given direction