( This ( ( ( is also ) ( ( shown ( with ( a ( flash coil ) ) ) ) ( where ( ( ( a current ) ( ( produced ( in ( a ( wire loop ) ) ) ) ( by ( a ( moving magnet ) ) ) ) ) ( makes ( ( a ( small light ) ) ( turn on ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (ADVP (RB also)) (VP (VBN shown) (PP (IN with) (NP (DT a) (NN flash) (NN coil))) (SBAR (WHADVP (WRB where)) (S (NP (NP (DT a) (NN current)) (VP (VBN produced) (PP (IN in) (NP (DT a) (NN wire) (NN loop))) (PP (IN by) (NP (DT a) (VBG moving) (NN magnet))))) (VP (VBZ makes) (S (NP (DT a) (JJ small) (NN light)) (VP (VB turn) (PRT (RP on))))))))) (. .)))
This is also shown with a flash coil where a current produced in a wire loop by a moving magnet makes a small light turn on.
(ROOT (S (NP (NNP Alternative) (JJ current)) (VP (VBZ is) (VP (VBN produced) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NN magnet) (CC or) (NN coil)) (VP (VBZ moves) (ADVP (RB back) (CC and) (RB forth)) (ADVP (RB repeatedly))))))) (. .)))