Multiple choice

The potential at a point A is - 9 V, while at another point B, it is 9 V. What is the potential difference between these points?

  1. 0 V

  2. 4.5 V

  3. 9 V

  4. 18 V
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Potential difference = VB - VA  = 9 - (- 9) = 18 V

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