19. Applications of Switch

Question.1

An Arduino-based development board features a small, 6mm square component with a round plunger in the center and four silver legs soldered into the board.

What is the electrical behavior of this switch when the plunger is pressed and then released?

It is a "momentary" switch that stays ON only while being held down.
It is a "latching" switch that stays ON permanently until pressed again.
It is a "normally closed" switch that breaks the circuit when pressed.
It is a "toggle" switch that alternates between two different circuits.

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