( ( Therefor ( the ( voltage ( and ( charge flow ) ) ) ) ) ( ( ( will both ) ( ( ( ( change polarity ) together ) , ) ( leaving ( ( the energy ) ( ( flowing ( in ( the ( same direction ) ) ) ) ( during ( the change ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Therefor)) (NP (DT the) (NN voltage) (CC and) (NN charge) (NN flow))) (VP (MD will) (DT both) (VP (VB change) (ADVP (RB polarity)) (ADVP (RB together)) (, ,) (S (VP (VBG leaving) (NP (NP (DT the) (NN energy)) (VP (VBG flowing) (PP (IN in) (NP (DT the) (JJ same) (NN direction))) (PP (IN during) (NP (DT the) (NN change))))))))) (. .)))
Therefor the voltage and charge flow will both change polarity together, leaving the energy flowing in the same direction during the change.
(ROOT (S (NP (NNP Voltage)) (VP (VP (VBZ is) (RB not) (NP (NP (DT the) (JJ same)) (PP (IN as) (NP (NN energy))))) (, ,) (CC but) (VP (VBZ means) (NP (NP (DT the) (NN energy)) (PP (IN per) (NP (NN unit) (NN charge)))))) (. .)))