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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 14

Two charged dust grains within a planetary ring are separated by a distance of 80 μm80\ \mu\text{m}80 μm. The electrostatic force of repulsion between them is 1.80 μN1.80\ \mu\text{N}1.80 μN. The distance between the dust grains is increased by 160 μm160\ \mu\text{m}160 μm.

What is the new electrostatic force of repulsion?

A

200 nN200\ \text{nN}200 nN

B

450 nN450\ \text{nN}450 nN

C

600 nN600\ \text{nN}600 nN

D

900 nN900\ \text{nN}900 nN

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Fields and their consequences (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Fields and their consequences (A-level only)

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