Question

Keisha analyzes this circuit diagram.

A circuit diagram with two small circles close to each other labeled W. A circle with an X in it on the top labeled X. On the right are parallel lines in alternating length perpendicular to the line of the circuit labeled Y. On the bottom of the circuit is a zig zag line labeled Z.
Which circuit component should Keisha use to start or stop the current in the circuit?

W
X
Y
Z

Answer 1

W — that symbol is the switch. A switch opens/closes the circuit to stop/start current. (X = bulb, Y = battery/cell(s), Z = resistor.)