Electric fields DONE

Question 1

Define an electric field

Answer 1

A region in which a charged particle experiences a non-intact force
Either attraction or repulsion

Question 2

State what arrows on electric field show and what the density of the lines represents

Answer 2

Field lines shows direction of the force experienced
By a positive charge in an electric field
Density of lines shows strength of field

Question 3

State what Coulomb’s law calculates

Answer 3

The force of attraction/ repulsion between two point charges in a vacuum

Question 4

What is ε_0 in the Coulomb’s law formula

Answer 4

The permittivity of free space

Question 5

Define electric field strength

Answer 5

Force per unit positive charge

Question 6

State whether electric field strength is a vector. If yes, describe the direction it will have

Answer 6

Yes

Points in direction that a positive charge would move

Question 7

Describe the difference between the field strength of a uniform field and the field strength of a radial field

Answer 7

In a uniform field, field strength is the same everywhere

In a radial field, field strength depends where you are

Question 8

What can be considered to have a radial field?

Answer 8

A point charge

Or a body which behaves as it all its charge is concentrated at the centre