In a switching apparatus having a pair of electrodes including a first
electrode and a third electrode, which are provided with a piezoelectric
element therebetween and a pair of electrodes including a second
electrode and a fourth electrode, which are provided adjacently to the
pair of the first and third electrodes in a state where they are
electrically insulated from the first and third electrodes, an electric
field in a first direction is generated between the first electrode and
the third electrode, and simultaneously an electric field in a second
direction is generated between the second electrode and the fourth
electrode.