If two stars have the exact same surface temperature, how does the larger star's luminosity compare?
Answer
It is always more luminous due to greater surface area.
If surface temperature is held constant, luminosity scales directly with the available surface area for radiating energy; a physically larger star has exponentially more surface area.

#Videos
Why Would The Size Of A Star Affect Its Luminosity? - Physics Frontier
Related Questions
What intrinsic property measures the total energy a star radiates into space every second?What two primary physical characteristics dictate a star's absolute radiance?If two stars have the exact same surface temperature, how does the larger star's luminosity compare?What effect does higher stellar mass have on the star's life cycle?How does a star's surface temperature affect the energy emitted per unit area?Which type of star is characterized by a very long lifespan due to slow fuel consumption?What scenario allows a smaller, very hot star to outshine a substantially larger, cooler star?What does the Hertzsprung-Russell (H-R) diagram plot to organize stars?What limits the theoretical upper boundary for how large and bright a stable star can become?Why might a star that is intrinsically very luminous appear faint when viewed from Earth?