The atomizer, which forms the main body of your electronic cigarette, is the component responsible for heating the e-liquid and producing an inhalable vapor. On the other hand, to give a more technical answer to the question what is an atomizer, it can be defined as the part that contains heating coils and, depending on its resistance power, turns the e-liquid into consumable vapor through heating.
The resistance power of the atomizer, measured in Ohms, is an important factor. This is because a lower resistance value produces higher heat, resulting in hotter vapor and more vapor production. Accordingly, the throat hit sensation of the e-cigarette will also be stronger.
However, it is worth noting that an atomizer with low resistance will consume battery power more quickly than one with higher resistance.
Likewise, since more liquid will be consumed, you will need to refill more frequently. On the other hand, an atomizer with higher resistance will offer the opposite performance.

Likewise, since more liquid will be consumed, you will need to refill more frequently. On the other hand, an atomizer with higher resistance will offer the opposite performance.
In this sense, deciding which resistance level—high or low—suits your expectations best will be easier based on your own experience.

However, if your expectations are the opposite, we recommend that you avoid choosing a very low resistance value.