Exam-style question
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A circuit has a potential difference of 12 V and a current of 3 A. Calculate the electrical power consumed by the circuit. Scenario focus: a practical measurement problem, where power is inferred from electrical readings rather than treated as stored charge.
Model answer
What a good answer should say
- The electrical power consumed by the circuit is 36 W.
Explanation
Why this works
The correct answer is The electrical power consumed by the circuit is 36 W.. In this version, the deciding idea is a practical measurement problem, where power is inferred from electrical readings rather than treated as stored charge.
That makes the correct option the one that uses the appropriate electricity quantity and unit, while the distractors either swap related circuit quantities or apply a rule from the wrong circuit situation.
Common mistake
No common mistake is linked to this question yet.