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11.2 Uses, dangers and electric fields

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Question 20

A positively charged grain of flour is positioned directly to the right of an isolated point charge. The electric force on the grain is directed to the right. The grain is then placed the same distance directly below the point charge, with both charges kept constant.

Which gives the sign of the point charge and the new direction of the electric force on the grain?

[1]
A

Negative point charge; force vertically upwards.

B

Positive point charge; force vertically downwards.

C

Positive point charge; force vertically upwards.

D

Negative point charge; force vertically downwards.

Markscheme

11.2 Uses, dangers and electric fields Questions

  1. GCSE
  2. /Physics
  3. /11.2 Uses, dangers and electric fields

80 exam-style questions on Edexcel GCSE Physics 11.2 Uses, dangers and electric fields, covering 11.2.1 Uses of electrostatic charge, 11.2.2 Dangers of sparking, 11.2.3 Electric fields, and 11.2.4 Electric fields and static electricity. Each one has a worked solution and a mark scheme showing where the marks go.

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