A-LevelPhysicsElectric fieldsOct/Nov 2021Paper 2 Q415 Marks
An α-particle moves in a straight line through a vacuum with a constant speed of 4.1 × 10⁶ms⁻¹. The α-particle enters a uniform electric field at point A, as shown in Fig. 4.1. [Figure 4.1] The α-particle continues to move in the same straight line until it is brought to rest at point B by the electric field. The deceleration of the α-particle by the electric field is 2.7 × 10¹⁴ ms⁻².
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