O-LevelPhysicsElectricity5054/12 · May/June 2014 · Q321 Mark

A metal sphere is connected to earth. A positively charged rod approaches the sphere and stops before touching it. What is the movement of charge on the sphere and what is the final charge on the sphere?

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Anegative charge moves from earth to the sphere, negative

Bnegative charge moves from earth to the sphere, neutral

Cpositive charge moves from the sphere to earth, negative

Dpositive charge moves from the sphere to earth, neutral

✓ Correct answer

A: negative charge moves from earth to the sphere, negative

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2014 Paper 1 Variant 2, question 32.

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