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The ratio of the potential difference across a metallic conductor to the current in the conductor is known as?
Wiki User
∙ 13y ago
That is the resistance, measured in ohms.
Wiki User
∙ 8y ago
Wiki User
∙ 13y agoaccording to ohm's law V=IR,where V=potential difference;I=current, R=resistance;
therefore V/I=R ,so its answer is R(resistance).
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Why is the potential difference between two points in a good conductor so small that it can be neglected?
Potential difference V = I R. Here I is the current passing through the conductor. R is the resistance of the conductor. In case of good conductor the resistance will be almost zero and so the product too becomes almost zero. Hence the potential difference is neglected.
How is electrical current produced?
A potential difference (volts) is set up between the two ends of a conductor. If there are any electrons available to move, then their negative electric charges persuade them to move away from the more negative potential and toward the more positive potential, resulting in current.
What is the ohm?
The Ohm is a unit of measure of resistance to the flow of electricity. The ohm is defined as a resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere.
Explain the analogy between the flow of charge or current in a conductor under a potential difference with the free fall of a body under gravity?
charge flows from high potential energy to low potential energy.Particle falls from high potential to low potential during free fall of particle. asok
Why does an electrical current not go through a power worker when he is working on power lines?
You are presumably describing those linesmen who work on live transmission lines while being suspended or while sitting on helicopters? For current to pass through the body, there must be a difference in potential across different parts of the body. If (just like a bird) a linesman is connected to a line conductor, his body assumes the same potential as that line -no potential difference, no current.
What happen is the potential difference across is double?
If the potential difference between the ends of any conductor is doubled, then the current through the conductor is also doubled.
What happens to the electrons in a conductor when there is a potential difference between the conductor's ends?
The free electrons in a conductor will, when a difference of potential (voltage) is applied at its ends, participate in electron current flow (or just current, if you prefer). The voltage applied to the conductor will drive current through the conductor, and the free electrons will support current flow. These electrons will actually move through the conductor. As electrons are driven into one end of the conductor, the free electrons "shift over" and electrons stream out the other end of the conductor. This is the essence of current flow in conductors.
Why is the potential difference between two points in a good conductor so small that it can be neglected?
Potential difference V = I R. Here I is the current passing through the conductor. R is the resistance of the conductor. In case of good conductor the resistance will be almost zero and so the product too becomes almost zero. Hence the potential difference is neglected.
Electron move without potentiel difference in a conductor?
No. In a good conductor you simply need less potential difference than in a bad conductor, to get the same current. But if you have zero voltage, you will also have zero current. Unless you have a superconductor (zero resistance), and the current is already flowing.
What is necessary in order to push current through a conductor?
A difference of potential (which is measured in Volts) is needed to make current flow.
Which constitute the Electric current in a metallic conductor?
Electrons.
Which particles constitute current in a metallic conductor?
electrons
What is the difference between a electrolytic conductor and a metallic conductor?
metalic conductors carries electrical current due to no.of free electrons,electrolytic conductors carries current due to no.of free ions
In an electric circuit resistance is?
Resistance is the opposition to the flow of electric current through a conductor. It is defined as the ratio of the potential difference (volts) between the ends of the conductor to the magnitude of the current (amps) through the conductor.
What does a current flow of electrons need?
Your question is not clear. A current is generated when a group of electrons flow through a conductor, and this happens when there is a potential difference between the 2 ends of the conductor. If you want to know how can we start the flow of electrons it is by creating a potential difference in between the 2 ends of the conductor.
What are live and neutral and earth wires for?
The correct term for the 'live' conductor is the 'line' conductor. The line conductor has a potential of 230 V (in UK) with respect to the neutral conductor which is at approximately the same potential as earth. This potential difference provides the 'driving force' for the current drawn by the load.
Which particle constitutes the electric current in a metallic conductor?
electrons
