The earth would be about the size of this circle > o <
All the earth's nuclear weapon stockpiles on earth detonating at the same time on the sun would not even be detectable. Not a blip.
A more accurate to scale pic.
The sun converts about 600 million tons of hydrogen to helium every second in its core. That’s equivalent to about 3 million times the combined nuclear arsenal of the U.S. and U.S.S.R. at the height of the Cold War, by my crude calculations.