Phys - Electrostatic & Gravitational Fields Flashcards
(4 cards)
1
Q
Why Is Potential -ive?
A
Because the system must do work to reach 0 potential energy rather than the work being done on it
2
Q
Fields and Potentials
A
Fields are vectors
Potentials are scalars
3
Q
Potential Definition
A
Energy needed to bring a unit mass/charge from infinity to that point
4
Q
Potential - Distance Graph
A
The -ive gradient at any point represents the field strength
