I got that there are active and passive buzzers. But they look same. How to distinguish these guys?

I got that there are active and passive buzzers. But they look same. How to distinguish these guys?

| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 3 |
| 2 | LouD _ | 2 |
| 3 | Dave | 1 |