( ( ( ( ( ( The measure ) ( of ( energy ( per ( unit charge ) ) ) ) ) ( is ( measured ( is ( called ( voltage ( -LRB- ( V -RRB- ) ) ) ) ) ) ) ) and ) ( ( ( the unit ) ( of measurement ) ) ( is ( called volts ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN measure)) (PP (IN of) (NP (NP (NN energy)) (PP (IN per) (NP (NN unit) (NN charge)))))) (VP (VBZ is) (VP (VBN measured) (SBAR (S (VP (VBZ is) (VP (VBN called) (NP (NP (NN voltage)) (PRN (-LRB- -LRB-) (NP (NNP V)) (-RRB- -RRB-)))))))))) (CC and) (S (NP (NP (DT the) (NN unit)) (PP (IN of) (NP (NN measurement)))) (VP (VBZ is) (VP (VBN called) (NP (NNS volts))))) (. .)))
The measure of energy per unit charge is measured is called voltage (V) and the unit of measurement is called volts.
(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)))))) (. .)))