Phys - Electrostatic & Gravitational Fields

Question 1

Why Is Potential -ive?

Answer 1

Because the system must do work to reach 0 potential energy rather than the work being done on it

Question 2

Fields and Potentials

Answer 2

Fields are vectors

Potentials are scalars

Question 3

Potential Definition

Answer 3

Energy needed to bring a unit mass/charge from infinity to that point

Question 4

Potential Over Distance Graph Gradient

Answer 4

The -ive gradient at any point represents the field strength