Physics (AS & A Level) · Oct / Nov 2017 · Paper 11 · Question 31
A small charged sphere of mass 0.80 g hangs from a light thread inside a vertical uniform electric field of strength 2000 V m⁻¹. The thread passes over two frictionless pulleys and a mass of 2.00 g hangs on the other end. The sphere is in equilibrium. What is the charge on the sphere?
- A–5.9 µC
- B+0.60 µC
- C+5.9 µC
- D+9.8 µC
As printed in the paper
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Correct answer: C. +5.9 µC
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