A-LevelPhysicsElectric fieldsMay/June 2016Paper 1 Q301 Mark
Before a thunderstorm, the hairs on your head sometimes stand on end. A hair with mass 0.50mg and charge 1.0pC is supported by a force due to an electric field. Ignore any forces other than the weight of the hair and the electric force. What is the electric field strength?
A4.9 × 10³ NC⁻¹
B4.9 × 10⁵ NC⁻¹
C4.9 × 10⁶ NC⁻¹
D4.9 × 10⁹ NC⁻¹
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The correct answer is C. This question tests the candidate's understanding of electric fields within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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