( Resistors ( ( ( ( ( joined end ) ( to end ) ) , ) ( so ( that ( ( the current ) ( ( ( only ( has ( ( one path ) ( along ( which ( it ( may travel ) ) ) ) ) ) ) , ) ( are ( said ( to ( be ( connected ( in series ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Resistors)) (VP (VBD joined) (NP (NN end)) (PP (TO to) (NP (NN end))) (, ,) (SBAR (RB so) (IN that) (S (NP (DT the) (NN current)) (VP (VP (ADVP (RB only)) (VBZ has) (NP (NP (CD one) (NN path)) (PP (IN along) (SBAR (WHNP (WDT which)) (S (NP (PRP it)) (VP (MD may) (VP (VB travel)))))))) (, ,) (VP (VBP are) (VP (VBN said) (S (VP (TO to) (VP (VB be) (VP (VBN connected) (PP (IN in) (NP (NN series))))))))))))) (. .)))
Resistors joined end to end, so that the current only has one path along which it may travel, are said to be connected in series.
(ROOT (S (NP (NP (NNS Resistors)) (VP (VBN connected) (NP (NN end)) (S (VP (TO to) (VP (VB end)))))) (VP (VBP are) (VP (VBN said) (S (VP (TO to) (VP (VB be) (PP (IN in) (NP (NN series)))))))) (. .)))