The region of space around a moving proton contains
a. a gravitational field only.
b. a magnetic field only.
c. an electric field only.
d. an electric, magnetic and gravitational field.
e. an electric and magnetic field only.
(conceptual question) See below.
The Attempt at a Solution
I know that both a magnetic field and an electric field apply to a dynamic particle, but I am unsure of the gravitational field. Does a gravitational field only apply to stationary particles?