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Electrons.
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∙ 8y ago
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Why does insulators and conductors matter?
In electricity, Insulators help insulate electric charges. Conductors conduct the electric charges and make them into electricity.
What is the difference between an electrical insulator and an electric discharge?
An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it nearly impossible to conduct an electric current under the influence of an electric field. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily.Electric discharge in gases occurs when electric current flows through a gaseous medium due to ionisation of the gas. Depending on several factors, the discharge may radiate visible light.
What would happen to a boat that was moving upstream at the same speed as the current moving downstream?
The boat would make no progress.
How do electric charges exert forces on each other?
ughm i think because when u pass a balloon on your head it make your hair move with it also.
How does an electric current produce light?
By heating a metal wire called a filament. In a light bulb (lamp) the electric current flows through a tungsten filament which glows white hot giving off light.
How can electricity be used to make a magnet?
Any time there is ANY flow of electric charges (any current), the current will be surrounded by a magnetic field.
How does an electric current flow?
The very word current means 'flow'. Electric current is the flow of electric charges. There are two kind of electric charges. Scientists considered the electric current as the flow of positive charges. But in case of solid metals, only negatively charged electrons are able to move freely where as the positively charged protons are held firmly within the core of the atoms. So electric current is due to negatively charged electrons. Now we have to differentiate these two. How? Let us consider the current due to flow of positive charges as conventional current flow. Hence conventional current direction is always opposite to the direction of flow of electrons. To keep the charges in motion we need a force to push them. So we use a chemical cell which has electrical potential difference between the two terminals. This potential difference is named as " electro motive force", in short "emf". So emf is responsible to make electric charges to flow.
How does an electricity flow?
The very word current means 'flow'. Electric current is the flow of electric charges. There are two kind of electric charges. Scientists considered the electric current as the flow of positive charges. But in case of solid metals, only negatively charged electrons are able to move freely where as the positively charged protons are held firmly within the core of the atoms. So electric current is due to negatively charged electrons. Now we have to differentiate these two. How? Let us consider the current due to flow of positive charges as conventional current flow. Hence conventional current direction is always opposite to the direction of flow of electrons. To keep the charges in motion we need a force to push them. So we use a chemical cell which has electrical potential difference between the two terminals. This potential difference is named as " electro motive force", in short "emf". So emf is responsible to make electric charges to flow.
Why does insulators and conductors matter?
In electricity, Insulators help insulate electric charges. Conductors conduct the electric charges and make them into electricity.
An electric current is the measure of what?
An electric current is a movement of charges, and it is measured in amperes or just amps. An ammeter is used to make this measurement. Current flow is a scalar quantity, and it refers to the number of charges passing a given point per unit of time.
What energy do electric charges make?
chemical energy
What is the contrast of an electric current and static electricity?
Just the words give the clear idea. Static means stationary. So charged without any motion make an object charged. This is what happens when a glass rod is rubbed with silk cloth. Here electrons right from glass get transferred to the silk. So glass acquire positve charge and silk equal negative charge Now the very word 'current' means 'motion'. Recall saying "water current is heavy in that river" So as charges have a tendency to be in motion then we call it as electric current. In case of solids only electrons capable of moving freely constitute the electric current. BUt in case of fluids ions both positive and negative constitute electric current
What is the difference between an electrical insulator and an electric discharge?
An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it nearly impossible to conduct an electric current under the influence of an electric field. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily.Electric discharge in gases occurs when electric current flows through a gaseous medium due to ionisation of the gas. Depending on several factors, the discharge may radiate visible light.
What purpose does a capacitor serve in a single phase motor?
These are actually single-phase induction motors. There is no electrical connection to the armature itself. To make the armature turn within the windings an electric current has to be induced in the it, and this is done by making the magnetic field move in relation to the armature. (The same principle is involved as moving a magnet over a wire to get an electric current.) With an electric current flowing in the armature there is a magnetic field set up around it which pushes against the magnetic field in the windings to make the armature turn.OK, but how to make the magnetic field move? That's the purpose of the capacitor.Capacitors have the property of advancing alternating current by (if I remember correctly) 90 degrees. In the simplest case, there are two windings in one of these motors. Unaltered electric current is sent through one of the windings. Some electric current is sent through the other winding and a capacitor. Now, because the two windings are being energised by currents that are out of phase by 90 degrees it is as if the magnetic field is moving. The armature responds by moving.
How can you make an electric current stronger?
An electric current through a resistive circuit can be increased by decreasing the resistive load or increasing the voltage of the circuit.
Negative charge on electrons is responsible for?
By moving a stream of electrons, we have an Electric Current. Which is very useful and we can make 'electric light' out of the current flow. Also we can generate a magnetic field with our current flow. Such as in 'electric motors'. We can also use the charge on the electrons to charge up an insulated piece of material. Such as in a 'foil electrometer'. Or in an 'electro static voltmeter', useful for very high voltages. These also respond to the RMS of a voltage.
What molecules make h2o?
mainly, an electric current passing throught
