[tag:electronics] appears to be a pretty useless, undefined tag.  Many of the questions contain this tag only because computers and related devices use electronics.  Aside from that, usage includes: 

 - specific components or devices that have their own tags 
 - requests for software or hardware recommendations 
 - discussions of various vulnerabilities, which are covered by specific tags
 - failure, troubleshooting, diagnostics, and repair; all covered by existing tags

Recommend just zapping it.