22.1 - 22.5

Question 1

define ‘electric field strength’

Answer 1

the force experienced per unit positive charge

Question 2

how is the direction of an electric field determined

Answer 2

its the direction a positive charge would move

Question 3

important ideas about electric fields

Answer 3

a field is uniform if the field lines are parallel and equally spaced

closer fields lines represent a stronger field

Question 4

what is coulomb’s law

Answer 4

any two point charges exert a force directly proportional to the product of their charges and inversely proportional to the square of the distance between them

Question 5

ideas of horizontal motion of particles in a uniform electrical field

Answer 5

zero acceleration

Question 6

ideas of vertical motion of particles in a uniform electrical field

Answer 6

the initial vertical velocity will be 0.

f=ma

Question 7

define ‘electrical potential’

Answer 7

the work done per unit positive charge from infinity to a point in an electrical field

Question 8

define ‘electric potential difference’

Answer 8

the work done per unit positive charge to move a charge between two points in an electrical field