Work through the list without notes. If you cannot do a statement, follow its link, then come back. Guide = study guide; Practice = practice questions.
Understanding
- I can state conservation of charge and say what must happen for a system’s net charge to change. (Guide: “Charge is conserved”; Practice Q6c)
- I can explain why charging a solid means moving electrons, not protons. (Guide: “Charge is conserved”; Practice Q5c)
- I can explain charging by rubbing and why the two objects end with equal and opposite charges. (Guide: “Charging by friction”; Practice Q1)
- I can describe induced charge separation in a conductor and polarization in an insulator, and say why the net charge does not change. (Guide: Figure 1; Practice Q2)
- I can describe grounding and why Earth’s own charge barely changes. (Guide: “Grounding”; Practice Q6)
Calculation and skills
- I can find the charges on identical conductors after contact by adding with signs, then sharing. (Guide: Worked example 1; Practice Q3, Q5b)
- I can count the electrons moved and state their direction. (Guide: Worked examples 1 and 2; Practice Q5c, Q7c)
- I can draw the charge distribution on objects during induction. (Guide: Figure 2; Practice Q7a)
- I can combine contact charging with Coulomb’s law to compare forces before and after. (Practice Q5, Q7d)
Reasoning
- I can explain why a charged object attracts a neutral object, and why only repulsion proves two objects are charged. (Guide: “Why a charged object attracts a neutral one”; Practice Q2)
- I can put the steps of charging by induction in order, predict the sign of the result and explain what goes wrong in the wrong order. (Guide: Worked example 2; Practice Q4)
- I can compare what grounding does to a charged conductor and to a charged insulator. (Practice Q6)
All ticked? Move on to Topic 10.3, Electric Fields, in the Topic 10.3 study guide, or return to the course roadmap.