The letter ⟨l⟩ is the almost universal spelling for /l/.
Doubled ⟨ll⟩ appears in the middle of words after short vowels, and at the end of short words.
Word-final ⟨le⟩ is actually a two-phoneme grapheme that represents /əl/ (schwa + L). The ⟨e⟩ is not silent — together with ⟨l⟩, it forms a syllable.