( ( ( ( Electric Potential ) and ) ( Field ( Magnitude ( w/EquipPotential ( Lines ( & ( Field ( Arrows Below ) ) ) ) ) ) ) ) ( ( ( ( left : ) Note ) ( that ( ( field arrows ) ( ( are always ) ( perpendicular ( to ( ( the ( equipotential lines ) ) ( in ( their vicinity ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Electric) (NNP Potential)) (CC and) (NP (NNP Field) (NNP Magnitude) (NNP w/EquipPotential) (NNP Lines) (CC &) (NNP Field) (NNPS Arrows) (NNP Below))) (VP (VP (VBD left)) (: :) (VP (NN Note)) (SBAR (IN that) (S (NP (NN field) (NNS arrows)) (VP (VBP are) (ADVP (RB always)) (ADJP (JJ perpendicular) (PP (TO to) (NP (NP (DT the) (JJ equipotential) (NNS lines)) (PP (IN in) (NP (PRP$ their) (NN vicinity)))))))))) (. .)))
Electric Potential and Field Magnitude w/EquipPotential Lines & Field Arrows Below left: Note that field arrows are always perpendicular to the equipotential lines in their vicinity.
(ROOT (S (SBAR (IN Since) (S (NP (DT the) (JJ electric) (NN field) (NNS lines)) (VP (VBP point) (ADVP (RB radially)) (ADVP (RB away) (PP (IN from) (NP (DT the) (NN charge))))))) (, ,) (NP (PRP they)) (VP (VBP are) (ADJP (JJ perpendicular) (S (VP (TO to) (VP (VB equipotential) (NP (NNS lines))))))) (. .)))