All Questions
Tagged with potential-energy voltage
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Questions about batteries and circuits
If the electrical potential difference is the difference in potential energy over charge
Say we have a circuit, we plug it into a 1.5V battery, does that mean that for every coulomb of electrons ...
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Would it be right to say that “Electric Potential” = the potential energy of an individual unit of charge at a certain point in a electric field?
Any replies from people who actually understand the topic (better than me, to say the least lol) and are able to clarify the topic (unlike my teacher), are highly appreciated and encouraged.
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Why is the electric field the strongest inside the resistors?
My understanding is that current is constant throughout the circuit. So it means that in the areas with high resistivity or small cross-sectional area the drift speed on electrons is the highest. ...
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Electric Potential and Potential Energy
Electric Potential definition is as follows:
Electric potential (also called the electric field potential,
potential drop, the electrostatic potential) is defined as the amount
of work energy needed ...
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Birds on power lines two feet versus one
So I know a bird can stand on a power line without being electrocuted because there is no current going to the ground. However, I know that curents will pass to different electric potentials. My ...
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Method of image charges for electric potential in a metallic disk
It is well known that the method of image charges is not always applicable, so I was wondering: is there an analytic way to calculate the electric potential for a point charge interacting with a ...
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Why doesn't voltage increase when the wire length increases; there's more work to be done?
This Q&A did not answer my question.
The voltage of a circuit is the difference in each Coulombs potential energy at the negative pole, compared to the positive pole. At the negative pole, there's ...
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Some books write $V(\vec{r})$ instead of $V(r)$ as a notation for the electric potential, so which one is right? [closed]
Some books write $V(\vec{r})$ instead of $V(r)$ as a notation for the electric potential, so can the electric potential depends also on the direction?
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Why Does equipotential surfaces gets father apart in the regions of weak electric field?
If we consider a charge in space then we can draw infinite number of spheres (taking the distance between the spheres equal) around the charge and these spheres act as equipotential surfaces. Now, As ...
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Inherent electric potential energy at one location
My question is this: Why can't electric potential energy be defined at one point. Surely a point charge has some inherent electric potential energy cause by force applied by the source field. The ...
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Potential difference for negative value
In an electric circuit, the electrons move from the anode to the cathode. The electrons at the anode have a higher potential energy than at the cathode.
The electric potential difference is $$ V_f - ...
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Why was $U=\frac{1}{2}QV$ not listed in my book as the potential energy of a capacitor?
$$U=\frac{Q^2}{2C}\tag{1}$$
$$U=\frac{1}{2}CV^2\tag{2}$$
$$U=\frac{1}{2}QV\tag{3}$$
$(1)$ and $(2)$ were listed in my book. However, I think $(3)$ is also a valid formula. Is there any particular ...
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Why do we use a unit positive charge while calculating the electric potential? Can't we use unit negative charge?
Electric potential is the amount of Work required to move a unit positive charge from infinity to a region of an electric field. Why do we need a positive charge for that? Can't we use negative charge?...
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What exactly happens in a circuit after it gains potential energy?
When an electron moves across a resistor, it loses potential energy.
Now imagine a simple circuit (series connection) with the negative terminal having 10v as its potential and positive terminal ...
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For a charge to have potential, why bring test positive charge closer to the point charge from infinity in uniform speed? why not variable speed?
For a charge to have potential, why bring test positive charge closer to the point charge from infinity by keeping it in 'electrostatic equilibrium'? or bring the charge closer to the point charge ...
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