电源
diàn yuán · HSK 4
electric power source
🔌⚡ 电源 = 电 (electric) + 源 (source)
电 means electricity; 源 means source or origin (the 氵water radical hints at a spring as the original source). Together: the source of electric power — an outlet, battery, or power supply.
电 — rain 雨 + lightning tail 电
Originally a pictograph of lightning streaking from a cloud, written 電 with the rain radical 雨 on top. The bottom 电 depicts the zigzag flash itself. The simplified form 电 drops 雨 and keeps just the lightning shape. Meaning extended from 'lightning' to 'electricity' in modern usage.