Multiple choice general knowledge

What are digital circuits?

  1. Electric circuits based on a number of discrete current levels

  2. Electric circuits based on a number of discrete voltage levels

  3. Electric circuits based on a number of discrete charge levels

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Digital circuits operate using discrete voltage levels (option B), typically representing binary 0 and 1. Unlike analog circuits that use continuous voltages, digital circuits work with specific, separated voltage thresholds. Options A and C are incorrect because digital circuits aren't based on current or charge levels.

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