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Polythene acquires a positive charge when rubbed with a cloth due to the triboelectric effect, where electrons are transferred from one material to another. In this case, the cloth tends to lose electrons to the polythene, resulting in the polythene becoming positively charged. The friction between the two materials facilitates this transfer, causing the imbalance of charge. Thus, the polythene ends up with a net positive charge while the cloth becomes negatively charged.
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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.
If you rub a copper rod rather than a polythene rod the copper rod will not stay charged why not?
Copper is a good conductor of electricity, so when it is rubbed, any charge accumulated on its surface quickly redistributes throughout the rod and dissipates. This rapid conduction of charge prevents the copper rod from retaining a net charge like a polythene rod, which is an insulator and can hold onto excess charge more effectively.
What is a positive charge and particles called that have no charge?
A positive charge is a positive electrical charge. Particles with no charge are called neutral particles.
What particles has a negative charge and which has a positive charge?
Negative charge = electron Positive charge = positron Positive charge = proton
Will a piece of perspex attract a polythene rod?
Yes, perspex can become attracted to a polythene rod when rubbed together due to the transfer of electrons between the two materials, resulting in a temporary static charge.
Why does polythene have a negative charge with a cloth?
When polythene is rubbed with a cloth, electrons are transferred from the cloth to the polythene, causing the polythene to become negatively charged. This transfer of electrons creates an imbalance of charges between the two materials, resulting in the polythene having a negative charge.
Does rubbing a polythene rod with a duster take away positive charge from the cloth?
Rubbing a polythene rod with a duster can transfer electrons and create a charge imbalance (like triboelectric charging). If the polythene rod gains electrons during rubbing, it will become negatively charged, meaning the duster could potentially lose positive charge, but the overall charge conservation principle still applies.
Can polythene rubbed against steel spoon produce charge?
Yes, when polythene is rubbed against a steel spoon, the two materials become charged due to the transfer of electrons between them. The polythene gains a negative charge, while the steel spoon gains a positive charge.
If you rub a polythene rod with a cloth will it become magnetic?
Rubbing a polythene rod with a cloth will not make it magnetic. This process of rubbing generates static electricity, not magnetism. Magnetism is a property of certain materials, such as iron and cobalt, that have aligned magnetic domains, which is different from the electrostatic charge generated by rubbing polythene.
What happen when a polythene rod is rubbed with a cloth?
When a polythene rod is rubbed with a cloth, electrons are transferred between the two materials, causing the polythene rod to become negatively charged and the cloth to become positively charged. This results in the attraction between the two materials due to opposite charges.
What charge does a polythene rod acquire when rubbed with a duster?
A polythene rod acquires a negative charge when rubbed with a duster. This is because electrons are transferred from the duster to the polythene rod, leaving the rod with an excess of electrons and a negative charge.
What happens when you rub a piece of cloth with a polythene rod?
Rubbing a piece of cloth with a polythene rod transfers electrons from one material to the other due to friction. This causes the cloth to become negatively charged and the polythene rod to become positively charged, leading to the attraction between them due to opposite charges.
What charge is on a polythene rod?
A polythene rod can acquire a negative charge when it gains extra electrons through friction with another material.
When a polythene rod is rubbed with a duster it becomes negatively charged . why?
When polythene is rubbed with a duster, electrons from the duster are transferred to the polythene rod, giving the rod an excess of electrons and making it negatively charged. This transfer of electrons creates an imbalance of positive and negative charges on the surfaces, resulting in the rod becoming negatively charged.
What is the overall electric charge on the ballon and on the cloth in the diagrtam?
The overall electric charge of the balloon is positive due to acquiring electrons when rubbed with the cloth. The overall electric charge of the cloth is negative because it loses electrons during the rubbing process.
What will happen if a polythene rod rubbed with duster brought near another polythene rod also rubbed with a duster?
The two polythene rods will repel each other. This is because when the rods are rubbed, they acquire a net positive charge which causes them to repel each other since like charges repel.
Will steel spoon attract pieces of paper when rubbed with polythene and woolen cloth?
No, rubbing a steel spoon with polythene and woolen cloth will create static electricity on the surface of the spoon, causing it to attract pieces of paper.
