An electrically conductive, metallic, L shaped rod extends through {HEAD ~ the common passageway} formed by {TAIL ~ both holes} of the pair of toroid magnets 
formed by
An electrically conductive , metallic , L shaped rod extends through { HEAD ~ the common passageway } formed by { TAIL ~ both holes } of the pair of toroid magnets
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH