Why do some materials gain electrons while others lose electrons when rubbed together? Which material property determines this behaviour?
باہم رگڑنے پر بعض مواد الیکٹران حاصل اور بعض ضائع کیوں کرتے ہیں؟ مواد کی کون سی خاصیت یہ رویہ طے کرتی ہے؟
Solution & explanation
Different surfaces bind electrons differently. Contact and separation permit transfer; surface chemistry and condition influence its direction. Friction increases contact and separation but does not create charge from nothing.
Independent study answer. Original textbook ↗ · English-medium printed page 102–103.