A-LevelPhysicsElectric fields9702/12 · May/June 2016 · Q311 Mark

Two parallel metal plates, 4.0cm apart, are at electric potentials of 800V and 2000 V. Points X, Y and Z are situated in the space between the plates at distances of 1.0cm, 2.0 cm and 3.0 cm from the lower plate. [Figure 31.1] What is the electric field strength, in Vm⁻¹, at X, Y and Z?

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AX: 300, Y: 600, Z: 900

BX: 1100, Y: 1400, Z: 1700

CX: 3.0 × 10⁴, Y: 3.0 × 10⁴, Z: 3.0 × 10⁴

DX: 5.0 × 10⁴, Y: 5.0 × 10⁴, Z: 5.0 × 10⁴

✓ Correct answer

C: X: 3.0 × 10⁴, Y: 3.0 × 10⁴, Z: 3.0 × 10⁴

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Topic: Electric fields, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2016 Paper 1 Variant 2, question 31.

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