Txoj kev teeb thiab tag nrho cov teeb nyob rau hauv ib lub tsev los yog nyob rau hauv kev lag luam yog kev cob cog rua nyob rau hauv parallel vim hais tias yog hais tias peb txuas nws nyob rau hauv series voltage hla txhua lub teeb yuav poob, li no nws yuav ci tsawg tshaj li nws rated lumen. Yog li, txhawm rau tswj qhov ntsuas hluav taws xob thoob plaws txhua lub teeb peb yuav tsum txuas nws nyob rau hauv parallel.
