Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 31
The diagram shows two metal plates P and Q. There is a potential difference of 700 V between the plates. Plate Q is earthed. What is the magnitude and direction of the electric field at point R?
- A1.4 × 10² N C⁻¹ from P towards Q
- B1.4 × 10² N C⁻¹ from Q towards P
- C1.4 × 10⁵ N C⁻¹ from P towards Q
- D1.4 × 10⁵ N C⁻¹ from Q towards P
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Correct answer: D. 1.4 × 10⁵ N C⁻¹ from Q towards P
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