A-LevelPhysicsElectric fields9702/12 · Oct/Nov 2018 · Q111 Mark
A positively-charged particle of negligible mass, moving at constant velocity v in a vacuum, enters a uniform electric field between two parallel plates, as shown. [Figure 11.1] A short time later, the particle is at the position shown. [Figure 11.2] Which diagram represents the force or forces acting on the particle?
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.
Adiagram showing a single downward force acting on the particle.
Bdiagram showing a single upward force acting on the particle.
Cdiagram showing a single force to the right acting on the particle.
Ddiagram showing a single force to the left acting on the particle.
✓ Correct answer
D: diagram showing a single force to the left acting on the particle.
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