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How does insulator get charge by rubbing easier than conductor?
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Is carbon a insulator or conductor?
Carbon being a tetra valent forms covalent bonds. So basically carbon is not a good conductor. But at the same time it is not an insulator. When electric potential difference is maintained then bonds could be easily broken and movement of charges becomes easier. So it becomes a conductor but a good conductor. Hence carbon is used to make resistors.
Does a charge move easier through metal or air?
Air
When a conductor is charged the charge moves to the outer surface of the conductor?
True. For instance in a wire, all of the charge is carried on the outside surface of the wire, and not down the center. Why?? Because when the electricity flows down the wire it causes alternating magnetic fields which cause alternating eddy currents within the wire. An eddy current is bascially an electromagnetic area of turbulence, and in this instance makes the flow of electrons easier on the outer edge of the wire. The higher the frequency that the electricity flows through the wire, the stronger the eddy currents and a thinner section of wire will carry the charge.
Do the sign positive or negative of the charge affect how that charge is dissipated?
The dissipation of charge comes from electron flow, regardless of how it was charged. The balance of electrons (which have a negative charge) to protons (which are positively charged) determine if the charge of the object. Protons are in the nucleus and will not leave the nucleus without some sort of nuclear reaction or decay. Also, if protons leave or are added to the nucleus, the element changes. Electrons orbit the nucleus, and are much easier to get to move from one atom to another. By rubbing two objects together, electrons can move from one of the objects to the other. If the objects are separated, then one of them has less electrons than before - this now has a net positive charge (there are more protons than electrons). The other object has a net negative charge (more electrons than protons). If a third object is touched, then the positively charged object may attract some electrons from this third object until the charge is neutralized. If the negative object touches another object, then it will give away the excess electrons so that it has a neutral charge. In both cases it is electron flow, just the direction of flow is different.
How does current electricity move?
In a conductive material, the atoms have a number of electrons which freely move back and forth from atom to atom. When an electric potential is applied across the conductor, more electrons start moving in from the negative end. The extra negative charge repels the electrons that are already in the conductor, so they start moving towards the 'positive' end. Electrons are negatively charged, and like charges repel each other. Because there are negatively charged particles (the electrons) moving from negative to positive, we conveniently say that 'current flows' from positive to negative (there are these imaginary positively charged particles), but this is just a concept which makes it easier to think about, and not actually how it works.
Why is it easy to charge a non conductor although it is with the hands?
It is easier to charge no-conductors with the hands because the charge generated will not be discharged through our bodies.
Is carbon a insulator or conductor?
Carbon being a tetra valent forms covalent bonds. So basically carbon is not a good conductor. But at the same time it is not an insulator. When electric potential difference is maintained then bonds could be easily broken and movement of charges becomes easier. So it becomes a conductor but a good conductor. Hence carbon is used to make resistors.
Why does air need to be at low pressure to create an electric arc?
Air is a relatively poor conductor of electricity, it is an insulator. Removing air creates an easier path for electrons to jump and create an arc.
How do you make sliding doors slide easier?
By rubbing the track with soap or wax
Does sugar in solid form conduct electricity?
well technically anything can conduct electricity..... but that doesnt mean it will be easier because of higher and lower resistances.
How are porous materials used as thermal insulators?
actually the insulator is the dead air in the pores a better insulator is vacuum (only radiation) air has conduction convection and radiation air is easier to handle near sea level
Does a charge move easier through metal or air?
Air
Will a sharp metal point with a small radius curvature store a large or small amount of charge?
There are two limits to how much charge a perfect conductor can store. One is determine by its area and has nothing to do with sharpness or radius of curvature. Thus, a larger area can store more charge than a smaller area. However, the other limit on the maximum stored charge is when the potential reaches the breakdown voltage and then an arc occurs. This breakdown voltage is easier to achieve when the object is sharp and thus ultimately it will indeed store less charge.
When a conductor is charged the charge moves to the outer surface of the conductor?
True. For instance in a wire, all of the charge is carried on the outside surface of the wire, and not down the center. Why?? Because when the electricity flows down the wire it causes alternating magnetic fields which cause alternating eddy currents within the wire. An eddy current is bascially an electromagnetic area of turbulence, and in this instance makes the flow of electrons easier on the outer edge of the wire. The higher the frequency that the electricity flows through the wire, the stronger the eddy currents and a thinner section of wire will carry the charge.
Why would a window pane have 2panes of glass with air between them?
Trapped air is a good insulator, making it easier to keep the climate inside under control.
Why is table salt is poor conductor of electricity?
Table salt is neutral and not ionized, making it a poor conductor of electricity. Salt ionizes in water and an electric current is conducted easier because of the different charges floating around.
What is the advantage of using a stranded copper conductor over a solid copper conductor?
It would of course depend on the specific application. Current tends to travel on the surface of a conductor and a stranded conductor has more surface area and thus offers less resistance to the current. Stranded wire also bends a bit easier than the corresponding size solid wire.
