What happens when an Ebonite rod is rubbed with wool?
On rubbing an ebonite rod with wool, the electrons from the wool get transferred to the ebonite rod. The wool gets a deficiency of electrons and so it gets positively charged. On the other hand, the ebonite rod gets excess electrons and hence it gets negatively charged.
When a plastic rod is rubbed with wool is brought near the knob of negatively charged gold leaf?
The rod repels negative charge from the top of the electroscope. This creates an excess of negative charge at the leaves. The leaves having the same charge, are repelled, and spread. Hence the leaf dilates.
What does an Electroscope do?
Electroscope, instrument for detecting the presence of an electric charge or of ionizing radiation, usually consisting of a pair of thin gold leaves suspended from an electrical conductor that leads to the outside of an insulating container.
What happens when glass rod is rubbed with fur?
1)As an example of the friction method, a glass rod rubbed with fur becomes negatively charged, but if rubbed with silk, becomes positively charged. Due to excess of electrons in rod, it becomes negatively charged while the fur with lost electrons, becomes deficient of electrons. Thus, fur becomes positively charged.
When you touch a plastic scale which is already brushed with your hair with the knob of an Electroscope the leaves repel Why?
Answer: When the disc is touched with a charged object, the charge distributes on both the strips of the electroscope. As both strips get similar charges, so they repel and it creates a divergence between the two strips.
Why did we use aluminum foil and not plastic inside the jar?
The electrons flow through the copper wire to the aluminum foil. The movement of electrons is called conduction. The ground distributed the electrons away from you and the metal inside the electroscope no longer had a charge. With no charge, they no longer repel and hang limp in the jar.
Does plastic comb cause hair loss?
Metal and plastic combs tend to irritate the scalp which results in flaky dandruff and hair fall. Wooden combs are gentler on the hair which results in a healthy scalp.
When you rub a plastic rod against your hair several times?
a) both get opposite charge. Explanation: When you rub plastic with your hair it get charge through process of conduction ,and when you put near some bits of paper the paper get opposite charge through induction.
What happens when a plastic comb is run through dry hair repeatedly?
Answer: When a comb is run through dry hair, the comb gets negatively charged due to friction. therefore there is a force of attraction between the comb and the small bits of paper. if the hair is wet ,friction between comb and hair is greately reduced.
Why is it difficult to manage dry hair with a plastic comb?
Cause of problem The reason is because the dry hair tends to collect positive (+) electrical charges when combed with a plastic comb. The individual hairs have a collection of positive charges on their surfaces, such that the hairs repel each other. The more you comb, the greater the charges and the worse the problem.
Why does a nylon or plastic comb gets electrified on combing or rubbing but a metal spoon does not?
Plastic comb is poor conductor of electricity so they contain static charges. While rubbing, due to friction,these static charges gain energy and get electrified. Whereas metal do not contain static charges as they are good conductors of electricity.
Why must JOSE use a plastic comb rather than a metal comb?
Answer. Both plastic and metal comb will get charged when rubbed in the hair. However, since metal is a conductor, the charges will flow to earth through the body and it will lose its charge. If the metal comb has an insulating plastic handle it will retain its charge.
What happened when the charged comb or bottle was placed beneath the newspaper?
Comb gets Charged due to Static Electricity The same thing happens when the comb is brought near neutral paper strips. Within the papers strips, the electrons get either repelled or attracted according to whether the comb has a negative or a positive charge.