( ( ( ( Electrical work ) or ) energy ) ( ( ( ( ( ( is ( ( the product ) ( of power ) ) ) ( multiplied ( by time ) ) ) , ) and ) ( is ( expressed ( as ( ( ( ( ( ( watt seconds ) , ) joules ) , ) or ) ( kilowatt hours ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Electrical) (NN work)) (CC or) (NP (NN energy))) (VP (VP (VBZ is) (NP (NP (DT the) (NN product)) (PP (IN of) (NP (NN power)))) (VP (VBN multiplied) (PP (IN by) (NP (NN time))))) (, ,) (CC and) (VP (VBZ is) (VP (VBN expressed) (PP (IN as) (NP (NP (NN watt) (NNS seconds)) (, ,) (NP (NNS joules)) (, ,) (CC or) (NP (JJ kilowatt) (NNS hours))))))) (. .)))
Electrical work or energy is the product of power multiplied by time, and is expressed as watt seconds, joules, or kilowatt hours.
(ROOT (S (NP (NP (JJ Electrical) (NN energy)) (VP (VBN consumed))) (VP (MD can) (VP (VB be) (VP (VBN expressed) (PP (IN as) (NP (NP (DT the) (NN product)) (PP (IN of) (NP (NP (NN power)) (VP (VBN multiplied) (PP (IN by) (NP (NN time))))))))))) (. .)))