Define electric potential at a point.
Exam No：9702_s25_qp_44 Year：2025 Question No：IGCSE&ALevelPhysics2025A20136
Answer:
Knowledge points:
18.5.1 define potential at a point as the work done per unit positive charge in bringing a small test charge from infinity to the point
18.5.2 state that the field strength of the field at a point is equal to the negative of potential gradient at that point
18.5.3 use the equation for the potential in the field of a point
18.5.4 recognise the analogy between certain qualitative and quantitative aspects of electric fields and gravitational fields
Solution:
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