a) the pith ball was initially at position A when a glass rod after rubbing with silk is brought near it moves to B state the reason. b) after touching the glass rod the pith ball moves back to C state the reason
Answers
Answer:
The pith-ball electroscope is used to detect the presence of a static electricity charge. The two lightweight 'pith' balls suspended from the strings are attracted to objects with a static electric charge. The pith balls can also be charged by touching them to an object with a static electric charge.
The pith-ball electroscope is also useful for detecting electric charges and for determining the polarity of an unknown charge.
If we bring a non-charged object near a non-charged pith ball electroscope, the pith ball will not move. But if the object is charged, then the pith ball will move towards or away from the charged body because it is attracted to or repelled from it. The attraction prevails until they touch, then they will repel.
In this case, the pith ball move away from the rod.
Hence, the body is negatively charged
Answer:
SBI know that when a glass rod will rub with silk. din the magnetic character has developed in glass rod due to this magnetic character pinball will attract because magnet attract iron and pinball is made of iron generally due to this season pinball come to the point B. but after touching the glass rod, the glass rod has lose their magnetic character due to which ball will get some potential energy and that potential energy push people to the point C.
this is the reason I think it will help you.
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