O-LevelPhysicsElectricity5054/11 · May/June 2022 · Q281 Mark

Two metal spheres are mounted on insulating stands. Sphere X is initially uncharged and sphere Y is initially positively charged. A metal rod, held by an insulating handle, is placed in contact with X and Y as shown. What are the charges on X and on Y after the rod is placed in contact with them?

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Apositive, positive

Bpositive, uncharged

Cuncharged, positive

Duncharged, uncharged

✓ Correct answer

A: positive, positive

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2022 Paper 1 Variant 1, question 28.

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