Exam-style question
Try this first
A circuit has a voltage of 12 V and a current of 3 A. What is the resistance in the circuit? Scenario focus: a resistance rearrangement problem, where the answer must solve for the circuit opposition rather than the supply voltage.
- A.4 Ω
- B.6 Ω
- C.3 Ω
- D.2 Ω
Model answer
What a good answer should say
- 4 Ω
Explanation
Why this works
The correct answer is 4 Ω. In this version, the deciding idea is a resistance rearrangement problem, where the answer must solve for the circuit opposition rather than the supply voltage.
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.