Final answer:
A white dwarf with a temperature of 10,000 K belongs to spectral class A.
Step-by-step explanation:
A white dwarf with a temperature of 10,000 K falls in the spectral class A.
The spectral class of stars is determined by their surface temperature. The hottest stars belong to the O class, while the coolest stars belong to the M class. In between, we have stars categorized as B, A, F, G, K, and M.
While white dwarfs are not typically referred to by a specific spectral class, their surface temperatures can be used to estimate their class. In this case, a white dwarf with a temperature of 10,000 K is considered to belong to spectral class A.