Exam-style question
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A circuit has an rms current of 5 A and an rms voltage of 230 V. Calculate the power in the circuit. Scenario focus: potential gradients in a distinct A-Level Physics fields context; identify the field quantity, source, direction, and unit before selecting the answer.
- A.1150 W
- B.1150 kW
- C.115 W
- D.115 kW
Model answer
What a good answer should say
- 1150 W
Explanation
Why this works
The correct answer is 1150 W. This is correct for Magnetic fields because the stem is testing potential gradients; the chosen option keeps the field quantity, source interaction, direction, and unit consistent.
The alternatives are weaker because they mix gravitational, electric, magnetic, orbital, or transformer ideas, or they attach the right number to the wrong physical meaning.
Common mistake
No common mistake is linked to this question yet.