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Electric Field and Potential — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectric Field and Potential2 Marks
Question
Why does a phonograph-record attract dust particles just after it is cleaned?
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Answer

When a phonograph record is cleaned, it develops a charge on its surface due to rubbing. This charge attracts the neutral dust particles due to induction. 

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