What is the voltage at the midpoint of the two charges? Now, make an electric dipole by replacing one of the positive charges with a negative charge, so the final configuration looks like the figure shown below. What is the voltage at the midpoint of the dipole? zero.
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What is the midpoint of a dipole?
Answer: A good example is the case of a dipole, which is two charges of the same magnitude, but opposite sign, separated by some distance. At the midpoint between the charges, the electric potential due to the charges is zero, but the electric field due to the charges at that same point is non-zero.
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Why the potential is zero at the midpoint of dipole?
Electric dipole moment of a dipole is equal to zero at mid point because at this point the force to positive and negative charge is equal and opposite, hence they cancel each other and the resultant force and therefore potential is zero.
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What is the potential due to the dipole at its midpoint?
Explanation: The potential due a dipole at a point P will be V = m cos θ/(4πεr2). Now it is given that potential on the midpoint, which means P is on midpoint, then the distance from midpoint and P will be zero. When r = 0 is put in the above equation, we get V = ∞.
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Why is the potential 0 in the middle of a dipole?
In a dipole with two opposite charges , exactly at it’s midpoint the electric potential due to cancelling of the charges becomes zero but the electric field due to charges at same point is non-zero.
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Where is potential zero in dipole?
The locus of the point of zero potential of an electrical dipole is straight line drawn at the middle of the electric dipole.
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What is the potential in the middle of dipole?
Potential at the center of an electric dipole is zero.
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Why potential is zero between two opposite charges?
At a point midway between two equal and opposite charges, the electric potential is zero but the electric field is not zero. The electric potential at a point is said to be one volt if one joule of work is done in moving one Coloumb of the charge against the electric field.
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What is the midpoint of an electric dipole?
An electric dipole is defined as a couple of opposite charges q and –q separated by a distance d. By default, the direction of electric dipole in space is always from negative charge -q to positive charge q. The midpoint q and –q is called the centre of the dipole.
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What is the voltage at the midpoint of a dipole?
V can be 0 at the midpoint, but you should check if the potential is varying around that point, and it is. IT does vary. That variation if what causes the charge to move.
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Why is potential zero at the mid point of a dipole?
Electric dipole moment of a dipole is equal to zero at mid point because at this point the force to positive and negative charge is equal and opposite, hence they cancel each other and the resultant force and therefore potential is zero.
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What is the electric potential at midpoint?
At the midpoint beween two identical charges, P, the resultant electric field is zero.
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What is the potential due to a dipole at a point P from it?
Explanation: The potential due a dipole at a point P will be V = m cos θ/(4πεr2). Now it is given that potential on the midpoint, which means P is on midpoint, then the distance from midpoint and P will be zero. When r = 0 is put in the above equation, we get V = ∞.
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What is potential due to dipole?
A dipole is a pair of opposite charges with equal magnitudes separated by a distance, d. Where ε0 is the permittivity of free space. The electric potential is a scalar field whose gradient becomes the electrostatic vector field. Since it is a scalar field, it is easy to find the potential due to a system of charges.
