A-LevelPhysicsElectric fields9702/12 · Oct/Nov 2009 · Q281 Mark

The electric field at a certain distance from an isolated alpha particle is 3.0 × 10⁷ N C⁻¹. What is the force on an electron when at that distance from the alpha particle?

A4.8 × 10⁻¹² N

B9.6 × 10⁻¹² N

C3.0 × 10⁷ N

D6.0 × 10⁷ N

✓ Correct answer

A: 4.8 × 10⁻¹² N

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Topic: Electric fields, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2009 Paper 1 Variant 2, question 28.

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