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O-LevelPhysicsKinematics5054/12 · Oct/Nov 2014 · Q31 Mark

In a model of an atom, electrons move in circular orbits around a nucleus. Which statement about the electrons is correct?

AThe electrostatic force on the electrons is away from the nucleus.
BThe acceleration of the electrons is towards the central nucleus.
CThe speed of the electrons varies continuously.
DThe velocity of the electrons remains constant.

✓ Correct answer

B: The acceleration of the electrons is towards the central nucleus.

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About this question

Topic
Kinematics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source
O-Level Physics, Oct/Nov 2014 Paper 1 Variant 2, question 3.

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