A-LevelPhysicsElectric fields9702/12 · Oct/Nov 2017 · Q321 Mark
An electron moves between two points X and Y in a uniform electric field, as shown. [Figure showing a uniform electric field with points X and Y, where the line XY is at an angle of 60° to the field direction] The distance between X and Y is 4.0 cm and the line XY is at an angle of 60° to the direction of the field. The field exerts the only force on the electron. The field strength is 100 N C⁻¹. What is the change in the kinetic energy of the electron as it moves from X to Y?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A-4 eV
B-2 eV
C+2 eV
D+4 eV
✓ Correct answer
B: -2 eV
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