# Potential Flashcards

What types of forces are gravitational and electric forces?

Conservative Forces

Why are gravitational and electric forces conservative forces?

They have fields that can store energy in the form of potential energy.

How do we know a conservative force exists?

A conservative force exists only if there exists some potential energy function U(r).

What is related to the work done by a conservative force?

The change in the potential energy of the system.

Formula for work with a constant force

W = F • ds (all vectors)

naag

Nature abhors a gradient

a particle released in a field moves in…

moves in the direction of decreasing potential.

Femtometer

10^-15

positron

Same characteristics as electron, but positive

∆V

Potential Difference

Potential is a property of what?

The generating charge only.

What type of quantity is ∆V?

Scalar quantity, that exists even without a test charge experiencing it.

Units of ∆V

J/C = Volts

E field lines point in which direction?

They point in the direction of decreasing potential.

Alpha particle

Helium Nucleus, particle with 2e charge (2 protons)