A-LevelPhysicsElectric fieldsMay/June 2010Paper 1 Q281 Mark
The diagram shows two points P and Q which lie, 90° apart, on a circle of radius r. A positive point charge at the centre of the circle creates an electric field of magnitude E at both P and Q. [Figure 28.1] Which expression gives the work done in moving a unit positive charge from P to Q?
A0
BE × r
CE × (πr / 2)
DE × (πr)
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The correct answer is A. This question tests the candidate's understanding of electric fields within the Physicssyllabus. The examiner's mark scheme requires...
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