( ( An ( electrical circuit ) ) ( ( is ( ( a network ) ( that ( has ( ( ( a ( closed loop ) ) , ) ( giving ( ( a ( return path ) ) ( for ( the current ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT An) (JJ electrical) (NN circuit)) (VP (VBZ is) (NP (NP (DT a) (NN network)) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (NP (NP (DT a) (ADJP (JJ closed)) (NN loop)) (, ,) (VP (VBG giving) (NP (NP (DT a) (NN return) (NN path)) (PP (IN for) (NP (DT the) (JJ current))))))))))) (. .)))
An electrical circuit is a network that has a closed loop, giving a return path for the current.
(ROOT (S (SBAR (IN Because) (S (NP (NNS charges)) (VP (MD must) (VP (VB have) (NP (DT an) (JJ unbroken) (NN path) (S (VP (TO to) (VP (VB follow))))))))) (, ,) (NP (JJ electric) (NN current)) (VP (MD can) (RB not) (VP (VB flow) (PP (IN through) (NP (DT a) (NN material))) (SBAR (IN unless) (S (NP (PRP it)) (VP (VBZ forms) (NP (DT a) (VBN closed) (NN loop))))))) (. .)))