Label the devices in the circuit diagram.
bulb
switch
battery

Bulbs=circle with x in it
Switch=open circuit
Battery=two lines in the top right
Bulb is the circle with X, switch is the open circuit and battery is the two lines present in the top right of the circuit.
In the diagram of circuit, the circle with x refers to the bulb, open circuit represents switch and two lines in the top right indicates the battery which is the source that provides elecric current to the bulb.
So we can conclude that bulb is the circle with X, switch is the open circuit and battery is the two lines present in the top right of the circuit.
Learn more about circuit here: https://brainly.com/question/2969220