4.2.5.1 Static charge

Spec reference: 4.2.5.1 (physics only).

Triple-only content in this dot

• Static charge by friction: electrons transfer between insulating materials.
• Like charges repel, unlike charges attract.
• Explain attraction/repulsion and sparking using electron transfer.

Exam quick-check

• Can I identify this as a triple-only point from wording in the question?
• Can I apply the correct equation/idea with units and a clear conclusion?