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Two types of charge. +. -. +. -. -. +. Same charges repel, different charges attract. Same charges repel, different charges attract. How rubbing can produce static electricity. At the start each material has no overall charge. Friction rubs electrons off - PowerPoint PPT Presentation

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Page 1: Same charges repel, different charges attract
Page 2: Same charges repel, different charges attract

Same charges repel, different charges attract

Two types of charge

+

-

+- -

+

Page 3: Same charges repel, different charges attract

Same charges repel, different charges attract

Page 4: Same charges repel, different charges attract

How rubbing can produce static electricity

At the start each material has no overall charge.

Friction rubs electrons offthe cloth onto the surface atoms of polythene.

The polythenegains electronsand becomesnegativelycharged.

Page 5: Same charges repel, different charges attract

However,acetatebecomes positively charged

Page 6: Same charges repel, different charges attract
Page 7: Same charges repel, different charges attract
Page 8: Same charges repel, different charges attract
Page 9: Same charges repel, different charges attract

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