The advertising medium which uses electric current in bulbs is referred to as

Explanation

Neon signs are advertising signs that use electric current in bulbs filled with neon gas or other gases to create bright anċ vibrant displays. The electric current passes through the gas-filled tubes, causing them to emit light of various colors. Neon signs are commonly used for outdoor advertising on buildings, storefronts, and billboards to attract attention and promote businesses or products.