What defines a black holes size?

1 Answer
Phillip E.
Mar 8, 2016

The size of a black hole is defined in terms of its mass.

Explanation:

The size of a black hole is defined by the Schwarzschild radius:
#r = (2GM)/c^2#
Where #G# is the gravitational constant, #M# is the mass of the black hole and #c# is the speed of light.

If the black hole is spinning or has an electric charge it can alter this size by up to a factor of 2 by more complex equations.

Related questions
See all questions in Life and Death of Stars
Impact of this question
1624 views around the world
You can reuse this answer
Creative Commons License