A probe is used to map an electric field inside a sealed test chamber. The amount of charge on the probe is the same in each test.
| Location | Charge on probe | Direction of force on probe | Size of force on probe |
|---|---|---|---|
| R | positive | to the right | 0.40 mN |
| S | negative | to the left | 0.90 mN |
A positively charged particle, with the same amount of charge as the probe, can be released at either R or S. It must experience a force to the right that is as large as possible.
Explain which location should be used. Use data from the table in your answer.
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.