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Q: Why does polythene have a negative charge with a cloth?
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Does rubbing a polythene rod with a duster take away positive charge from the cloth?

no


How to charge an object by friction?

An object can be charged by friction when rubbed against another surface such asa) polythene rod rubbed against a woollen cloth.This occurred because the woollen cloth lost some of it negative charges when it was rubbed, the negative charges was then transferred to the polythene rod. Now the polythene rod has been charge by friction.For proof... after it has been charged,place the polythene rod next to some *very small bits of paper and see what happens.


What will happen if a polythene rod rubbed with dry woolen cloth brought near another polythene rod also rubbed with a dry woolen cloth?

Both rods acquired charge of the same polarity during the rubbing process, so there will be a force of repulsion between them.


If a plastic ruler is rubbed with a cloth does the ruler obtain a positive charge?

Because electrons will be transferred from the cloth to the insulating rod. But the charge will be negative.


Will rubbing a silk cloth on glass cause electrons to move to the cloth?

Yes, rubbing a silk cloth on glass cause electrons to move to the cloth. As a result, glass rod acquires positive charge and silk acquires negative charge.


When a polythene rod is rubbed with a duster it becomes negatively charged . why?

Because electrons are rubbed off the cloth and build up on the polythene.


What charge develops on rubbing plastic straw with polythene?

Static electrical charge.


What happens when a polythene strip is rubbed on a woolen cloth and then placed near a thin stream of running water from a tap?

The polythene becomes negatively charged.


What happens when you rub ebonite with a wood cloth?

electrons are transferred to the stick,causing it to take on a negative charge.


If you rub a polythene rod with a cloth will it become magnetic?

No, it will not become magnetic. It will become electrically charged.


What happens when you rub ebonite stik with a wood cloth?

electrons are transferred to the stick,causing it to take on a negative charge.


A plastic rod is rubbed with a dry cloth how does the rod become negatively charged?

This happens because the negative electrons on the duster move to the polythene rod. Despite this, the rod still has some positive electrons meaning it should be called an unbalanced negatively charged rod. Hope this helps XD