The sign ಅಂ uses the anusvara ಂ. Where is ಂ written relative to the vowel/consonant?
After the letter at the same level
Above the letter, e.g. ಕ + ಂ = ಕಂ
Explanation
The anusvara **ಂ** is always written above the letter it modifies, creating a small dot-like sign.