A-LevelPhysicsElectric fields9702/12 · May/June 2011 · Q301 Mark

The diagram shows two parallel metal plates connected to a d.c. power supply through a resistor. [Figure 30.0] There is a uniform electric field in the region between the plates. Which change would cause a decrease in the strength of the electric field?

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Asmall increase in the distance between the plates

Bsmall increase in the potential difference between the plates

Csmall increase in the value of the resistor

Dsmall increase to the area of both plates

✓ Correct answer

A: small increase in the distance between the plates

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Topic: Electric fields, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2011 Paper 1 Variant 2, question 30.

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