Why does a rubbed ruler lift paper that has never touched the cloth? Explain charging by electron transfer and distinguish attraction from evidence of opposite charges.
Pupils try “Test how charging changes attraction”. Includes the editable PowerPoint, a 50-minute lesson plan and a printable pupil sheet with equipment, instructions, example evidence and worked teacher answers.
KS3 physics for ages 11–14. Part of the electric charge and circuits sequence.
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