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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.
Q 1 Name a device that helps to maintain the potential difference across a conductor?
voltmeter
The ratio of the potential difference across a metallic conductor to the current in the conductor is known as?
That is the resistance, measured in ohms.
Why voltage are not produce in netural wire?
First of all, by definition, 'voltage' is another word for 'potential difference', and a potential differenceexists between two different points. So a single conductor cannot experience a 'voltage' or 'potential difference'. Your question, therefore, should ask why a neutral conductor has no 'potential'. By general agreement, potentials are measured with respect to earth (ground), which is arbitrarily assumed to be at 0 volts.The answer is that a neutral conductor is earthed, or grounded, so theoretically its potential must be the same as earth -i.e. 0 volts. But, in practise, due to the resistance of the conductor that connects the neutral conductor to earth, the neutral conductor can often have a potential of several volts with respect to earth.
What is 'electrical potential' - 'energy difference' or 'voltage'?
Electrical potential deals with moving a charge in a direction opposite to an electric field. So what we are actually dealing with is Potential Energy. This can be calculated by the equation of PE = QEd where Q is the charge of the particle, E is the electric field and d is the distance the charged particle has been moved. The units of all this ends up being Joules (J). Now, electric potential difference is another story. This is the work per unit charge. In this case the unit will be V (volts).
How is the potential difference maintained across the end of the conductor?
That's the job of the battery or other power supply.
Define the 'potential difference between the ends of a conductor'?
Potential difference between the ends of a conductor refers to the electrical energy difference per unit charge between two points in the conductor. It is commonly known as voltage and is measured in volts. A potential difference is necessary for the flow of electric current in a conductor.
Name a device that helps to maintain a potential difference across a conductor?
volt meter is the device that helps to maintain a potential difference across a conductor
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 electric potential generated in a conductor during the flow of charges?
Electric potential in a conductor is generated by the movement of charges, creating an electric field. As electrons flow through the conductor, they experience a resistance, which causes a potential difference to develop. This potential difference creates an electric field that drives the flow of charges.
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 condition must exist between two points in a conductor in order to maintain a flow of charge?
There must be a potential difference between the two points in the conductor in order to maintain a flow of charge. This potential difference creates an electric field that drives the charges to move from one point to another.
How are voltages imported into installations through the supply neutral conductor?
A 'voltage' is another name for a potential difference. As the name implies, a potential difference exists between two different points or, in the case of an electrical installation, between the line conductor and the neutral conductor. So the neutral does not 'import voltages'. Voltages exist between the line (hot) conductor and the neutral conductor.
How does potential difference induce an electric current?
A potential difference, or voltage, creates an electric field along a conductor. This electric field exerts a force on the free electrons within the conductor, causing them to move in response to the voltage. This movement of electrons constitutes an electric current flowing 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.
Q 1 Name a device that helps to maintain the potential difference across a conductor?
voltmeter
The ratio of the potential difference across a metallic conductor to the current in the conductor is known as?
That is the resistance, measured in ohms.
