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Edexcel IGCSE Physics 2 23p Charging By Friction Practical Questions

Explore how friction charges insulating materials and how to plan a test using independent, dependent and control variables.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • Describe how to charge an insulating rod by rubbing it with another insulator.
  • Choose independent, dependent and control variables for an investigation of charging by friction.

Edexcel IGCSE Physics 2 23p Charging By Friction Practical Questions question 1

[Maximum number: 2]

A student uses this apparatus to investigate static electricity.

The positively charged ball is suspended vertically on a long length of string.

Figure for Question Edexcel IGCSE Physics 2 23p Charging By Friction Practical Questions question 1 — Edexcel IGCSE Physics

The student extends the investigation by measuring the reading on the scale for rods made from different materials.

As a control variable, the student charges each rod by rubbing it with a cloth the same number of times.

Give two other control variables for the student's investigation.

1 ............
2 ............

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