Electric Fields

Question 1

Define an electric field

Answer 1

A region of space within which a charged particle experiences a force

Question 2

What is the equation of Electric Field Strength?

Answer 2

E=F/Q (force per unit charge)

Question 3

What are the units of Electric Field Strength?

Answer 3

Newtons per Coulomb, NC^-1

Question 4

What gives the field direction?

Answer 4

The direction a small positively charged particle will move in the field

Question 5

What are the characteristics of a uniform field?

Answer 5

Poles and field lines equidistant

Uniform field strength

Question 6

What are the characteristics of a radial field?

Answer 6

Field lines equiangular (same angle between each)

Field strength decreases away from pole

Question 7

What factors affect Electric Field Strength?

Answer 7

PD across field

Distance of plates from each other

Question 8

What is the alternate equation for EFS given the factors that affect it?

Answer 8

E=V/d (Volt per metre apart)

Question 9

What is electric potential?

Answer 9

The potential energy that a coulomb of positive charge would have if placed at a specific point in the field

Question 10

What does an equipotential surface do?

Answer 10

Join points of equal potential (they are perpendicular to field lines)