What is a diode?

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(B) diode is a two-terminal electronic component that primarily conducts current in one direction (called the forward-biased direction) while blocking

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$A$ semiconductor device that acts as a one-way switch for current.

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(B) diode is a two-terminal electronic component that primarily conducts current in one direction (called the forward-biased direction) while blocking current in the opposite direction (called the reverse-biased direction). It is typically formed by joining a $p$-type semiconductor and an $n$-type semiconductor to create a $p-n$ junction. Due to its unidirectional property,it is widely used in rectifiers,voltage regulators,and signal demodulators.

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