bzzt

As a noun buzz

is a continuous, humming noise, as of bees; a confused murmur, as of general conversation in low tones.

As a verb buzz

is to make a low, continuous, humming or sibilant sound, like that made by bees with their wings.

As an interjection bzzt is

the sound of a buzzer or of electricity.

As interjections the difference between bzz and bzzt

is that bzz is the buzzing sound of a bee, wasp, etc while bzzt is the sound of a buzzer or of electricity.

Bzzt is a alternative form of bzzzt.

As interjections the difference between bzzzt and bzzt

is that bzzzt is an alternative spelling of bzzt while bzzt is the sound of a buzzer or of electricity.

As a noun electricity

is the study of electrical energy; the branch of science dealing with such phenomena.

As an interjection bzzt is

(onomatopoeia) the sound of a buzzer or of electricity.

As a noun buzzer

is one who, or that which, buzzes; an insect that buzzes.

As an interjection bzzt is

the sound of a buzzer or of electricity.