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How a charged rod placed near an uncharged metal object can repel?
Wiki User
∙ 13y ago
Charged rod and an uncharged metal object attract each other because free electrons in metal are either attracted or repelled by the charged rod.
If the rod is positively charged then free electrons are attracted towards it and both objects attract each other.
If the rod is negatively charged then free electrons are repelled by it and positive ions are attracted by the rod and both objects attract each other.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoIt becomes positevely charged.
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Why does a rubbed plastic object stay charged but a rubbed metal object lose its charge?
Plastic is an insulator where as metal is a good conductor
What happens when a charged electroscope is connected to an uncharged electroscope by a metal wire?
Charge would flow from the charged electroscope to the initially uncharged one, until the charges are equal on both. At that point, the potential on both ends of the wire would be equal, there would be no voltage across the wire, and no more current would flow. Both electroscopes would then be charged, with charge of the same sign, and with half as much charge as the initially-charged one had.
Why do the leaves of an electroscope spead apart when a charged object touches the metal knob?
The charged object charges both leaves of the electroscope with like charges and like charges repel.
What happens when you bring a negatively charged rod near a piece of metal?
Uncharged means that there are an equal number of protons and electrons. When the negative rod is held near the neutral metal ball, the electrons from the metal ball repel from the electrons on the rod bringing the protons closer to the rod causing the metal ball to be attracted to the negatively charged rod. It's called charging by induction.
Why is it important to touch a charged object to the metal rod of an electroscope and not to the rubber stopper?
it is important because if you don't and touch the rubber stopper it will not show if it is positive.
What happens wheharges in an uncharged metal object rearrang without direct contact with the charged object?
In that case, the fact that the charges are rearranged - there is an electric dipole - can cause the charged object and the object with the zero net charge (but with an electric dipole) to attract one another.
Why does a rubbed plastic object stay charged but a rubbed metal object lose its charge?
Plastic is an insulator where as metal is a good conductor
If a metal object receives a positive chargedoes the mass of the object increasedecreaseor stay the same?
Object A is charged . Because the neutral objects do not repel or attract charged bodies..
How does A student puts a negatively charged object against a metal cabinet. Describe what happens to the charge on the object when it touches the metal cabinet?
Well the metal would obviously attract a charged particle for its charge less surface. The only possible way would be placing a positively charged object on the other side of the negative charged object such that it could counter effect the coulombian pull on the negative charge due to the metal. To keep the positive charge in place it would need to place it within oppositely charged electronic plates. This needs more amendments but thats another topic. When a charged object touches metal, the end result is usually what is known as a static shock.
Do a negativity charged and neutral object repel?
No. But they can attract each other, provided the neutral object is a metal, in which case the negatively charged object will induce charges on it to cause the attraction.
What happens when a charged electroscope is connected to an uncharged electroscope by a metal wire?
Charge would flow from the charged electroscope to the initially uncharged one, until the charges are equal on both. At that point, the potential on both ends of the wire would be equal, there would be no voltage across the wire, and no more current would flow. Both electroscopes would then be charged, with charge of the same sign, and with half as much charge as the initially-charged one had.
Why do the leaves of an electroscope spead apart when a charged object touches the metal knob?
The charged object charges both leaves of the electroscope with like charges and like charges repel.
When an object is charged by rubbing how to identify whether the charge of the object is positive or negative?
by its properties.i.e whether a metal or any insulator
What happens when you bring a negatively charged rod near a piece of metal?
Uncharged means that there are an equal number of protons and electrons. When the negative rod is held near the neutral metal ball, the electrons from the metal ball repel from the electrons on the rod bringing the protons closer to the rod causing the metal ball to be attracted to the negatively charged rod. It's called charging by induction.
When placed between oppositely charged metal plates the region of a water molecule that is attracted to the negative plate is the .?
partially positively charged hydrogen end of the molecule.
If a neutral metal comb is held near an object with a negative charge the comb will become charged by?
induction
Weight of an object will be minimum when it is placed at?
weight of an object is minimum when it is placed at the center of the earth because when an object is in the center ,it experiences gravitational pull from all the sides.thus the net weight of an object remains to be zero. +++ Possibly, but given that the centre of the Earth is unreachable and a ball of metal anyway, a more useful and achievable location for weightlessness is in Space!
