CAIE A-Level Physics 18.5.2 Electric Potential Gradient
Practise using the negative potential gradient to find electric-field strength and direction from a potential-distance graph.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- explain that electric field strength is the negative of the potential gradient
- use a potential–distance graph to determine field direction or magnitude from its gradient
18.5.2—The fact that the electric field at a point is equal to the negative of question 1
[Maximum number: 2]
The electric potential gradient is related to the electric field.
Use data from Fig. 4.2 to state the value of x at which the magnitude of the electric potential gradient is maximum. Give a reason for the value you have chosen.
field strength or E is potential gradient or field strength is rate of change of (electric) potential
M1
(field strength) maximum at x=6 cm
A1
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