A wand made of an unknown material attracts a positively charged sphere. One of

Question

A wand made of an unknown material attracts a positively charged sphere. One of your lab partners says that the wand could have a negative charge since it is attracting the positively charged sphere. Your other lab partner says that the wand could be neutral. Both of your lab partners are correct. Explain how this is so.

If you rub two objects together and find that object A has a positive charge of +19 nC:

What can you say about the charge on object B?

If you were to rub the objects together more rapidly, what would happen to the quantity of charge on object A?

Explanation / Answer

if both the lab parners are correct then

initially the wand is neutral charge after rubbing with some material so that , if it is attracting positively charged body so , it could gain negative charge.

If the object A is positive charge of +19 nC, means it would transfered the negative charges to the other body B,which is loosing some positive charge transfering to body A, in same amount.

If we rub the objects more rapidly the quantity of charge on object A is same amount but time taken to get the charge is less when compared with the previous case that is slowly rubbed with the other body.

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