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Electric fields (A-level only)

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Question 7

In an industrial electrostatic precipitator, two parallel vertical metal plates separated by a distance h h\,h are used to remove particulate matter from exhaust gases. A potential difference V V\,V is maintained across these plates. A spherical dust grain carrying a net charge q q\,q is situated at a horizontal distance of 0.15h from the negative plate.

What is the magnitude of the electrostatic force acting on this dust grain?

A

0.15qVh0.15 \frac{qV}{h}0.15hqV​

B

qVh\frac{qV}{h}hqV​

C

qV0.15h\frac{qV}{0.15h}0.15hqV​

D

qV0.85h\frac{qV}{0.85h}0.85hqV​

Markscheme

Electric fields (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Electric fields (A-level only)

48 exam-style questions on AQA A Level Physics Electric fields (A-level only), covering Coulomb's law (A-level only), Electric field strength (A-level only), and Electric potential (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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