The labelling of the cell is shown in the image attached.
The battery, which is represented by parallel lines with positive and negative terminals, provides power in a basic electrical circuit. The electric current flow is managed by a switch, which is represented as a gap in the circuit. The load, represented by a circle with a cross, is the bulb, which transforms electrical energy into light.
The bulb is illuminated when current flows from the positive battery terminal through it when the switch is closed, completing the circuit. On the other hand, when the switch is open, the circuit is broken, which results in the lightbulb turning off.