Electric fields

Question 1

Coulomb’s law

Answer 1

Coulomb’s inverse-square law of physics calculates the amount of force between two electrically charged particles at rest

Question 2

Permittivity of free space

Answer 2

A physical constant that reflects the ability of electrical fields to pass through a classical vacuum

Question 3

Electric field strength

Answer 3

A quantitative expression of the intensity of an electric field at a particular location
Field strength = voltage drop ÷ distance between the plates

Question 4

Radial field

Answer 4

lines that radiate into a point or out the point. they weaken the further out they go and are stronger towards the centre point

Question 5

Uniform field

Answer 5

A field in which the value of the field strength is the same at all points

Question 6

Electric potential

Answer 6

The amount of work needed to move a unit charge from a reference point to a specific point against an electric field

Question 7

Electric potential difference

Answer 7

The voltage between two points that makes an electric current flow between them