0.25 V 4 V 15 V 36 V
I gave my students this multiple choice question: What is the voltage in a circuit with a current of 3 ohms and a total resistance of 12?

Only one answer is correct among these 4 choices:
- 0.25 V
- 4 V
- 15 V
- 36 V

Could you tell me which one is correct?

36 V