It produces a noise when a voltage between 1,5 and 6 V is applies. The positive side of the batteries or power sources has to be connected to the positive side of the buzzer.

What happens if the negative terminal of the battery is accidentally applied to the red terminal of the buzzer?

CIRCUIT WITH A BUZZER
We have to be careful and connect the positive side of the buzzer (red) with the positive side of the battery (red).

We have to be careful and connect the positive side of the buzzer (red) with the positive side of the battery (red).

We use 1 battery holder, 2 minikits, and 1 connection cable.
VARIATION OF SOUND OF A BUZZER WHEN INCREASING APPLIED VOLTAGE
Connecting the cable C to the point A, 1,5 V is applied to the buzzer and it sounds. Repeating the operation with the point Y, 6 V will be applied, and it will sound louder and higher pitched.

We have to be careful and connect the positive side of the buzzer (red) with the positive side of the battery (red).

We use 2 battery holders, 1 minikit, and 1 connection cable.
MORSE CODE WITH BUZZER AND A LIGHTBULB
For the duration the pushbutton P is pressed, the voltage V of the battery is applied to the lightbulb L and the buzzer B in parallel.



We use 1 battery holder, 3 minikits, and 3 connection cables.