Why are dust particles often attracted to television screens or computer monitors after they are switched on?
ٹیلی وژن یا کمپیوٹر مانیٹر آن کرنے کے بعد گرد کے ذرات اکثر اسکرین کی طرف کیوں کھنچتے ہیں؟
Solution & explanation
A charged surface exerts force on charged dust and polarises neutral particles. This is especially noticeable on some older high-voltage displays; not every modern screen charges equally.
Independent study answer. Original textbook ↗ · English-medium printed page 102–103.