FIG. 1 is a front perspective view of a first embodiment of an electric kettle, showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is an enlarged view of the encircled portion 8 in FIG. 1;
FIG. 9 is an enlarged view of the encircled portion 9 in FIG. 1;
FIG. 10 is an enlarged view of the encircled portion 10 in FIG. 2;
FIG. 11 is an enlarged view of the encircled portion 11 in FIG. 4;
FIG. 12 is an enlarged view of the encircled portion 12 in FIG. 6;
FIG. 13 is an enlarged view of the encircled portion 13 in FIG. 7;
FIG. 14 is a front perspective view of a second embodiment of an electric kettle, showing my new design;
FIG. 15 is a front view thereof;
FIG. 16 is a rear view thereof;
FIG. 17 is a left-side view thereof;
FIG. 18 is a right-side view thereof;
FIG. 19 is a top view thereof; and,
FIG. 20 is a bottom view thereof.
The even-dash broken lines illustrating portions of the electric kettle form no part of the claimed design. The dot-dot-dash broken lines encircling enlargement portions of the claimed design form no part of the claimed design.