Exam-style question
Try this first
In the escape-energy reasoning scenario, a probe is moved from a planet surface to a distant point. Which option best applies the AQA A-Level Physics objective to define electric field strength as force per unit positive charge. while avoiding using field strength where potential energy is required?.
- A.field-case-43: Apply Define electric field strength as force per unit positive charge. within Electric field strength.
- B.field-case-43: Treat Electric field strength as separate from Electric fields, so the measured field idea is not used.
- C.field-case-43: Choose a memorised equation without checking direction, sign, field geometry or units.
- D.field-case-43: Replace the A-Level fields reasoning with a broad GCSE label only.
Model answer
What a good answer should say
- The correct option is field-case-43: Apply Define electric field strength as force per unit positive charge.
- within Electric field strength.
Explanation
Why this works
It is correct because it keeps the reasoning inside Electric field strength and answers the approved learning objective: Define electric field strength as force per unit positive charge. The other options are weaker because they switch to the wrong fields concept, ignore the measured quantity, lose direction or sign information, or use a generic statement instead of A-Level Physics reasoning.
Common mistake
No common mistake is linked to this question yet.