( ( ( ( Field lines ) and ) ( ( equipotential lines ) ( for ( a ( positive ( point charge ) ) ) ) ) ) ( ( are ( shown below ) ) . ) )
(ROOT (S (NP (NP (NNP Field) (NNS lines)) (CC and) (NP (NP (JJ equipotential) (NNS lines)) (PP (IN for) (NP (DT a) (JJ positive) (NN point) (NN charge))))) (VP (VBP are) (VP (VBN shown) (ADVP (RB below)))) (. .)))
Field lines and equipotential lines for a positive point charge are shown below.
(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))))))) (. .)))