Physics (AS & A Level) · Feb / March 2016 · Paper 12 · Question 28
9702Electric fields and field lines
The electric field strength at a certain distance from an isolated alpha particle is 3.0 × 10^7 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 × 10^7 N
- D6.0 × 10^7 N
As printed in the paper
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Correct answer: A. 4.8 × 10^–12 N
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