What is the electric potential of a ring?
Electric potential at the centre of the ring is the same as the potential due to a point charge. Whereas the electric field is 0 at the centre of the ring because the electric field at the half side of the ring cancels out the other half.
What is the potential due to a disc?
. We know the equation for electric potential is V=14πε0qr. , so using this equation for that small part of the disc we get the equation dV=14πε0dq√r2+x2. . Then integrate this equation and we get this equation V=σ2ε0[√R2+x2−x]
What is the electric potential at the center?
The electric field at the center of the square is the vector sum of the electric field at the center due to each of the charges individually. The potential at the center of the square is equal to the algebraic sum of the potentials at the center due to each of the charges individually.
Why is the electric field inside a ring zero?
What is the magnitude of the electric field at the center of a ring of charge of radius a? Assume there is a charge Q uniformly distributed over the ring. The field from one side of the ring cancels the field from the other, so the net field at the center is zero.
What is the electric potential between two opposite charges?
Since the charges have equal magnitude and the distance from each to the mid point is the same, the magnitude of the potential energy contributed by each charge is the same, but the signs are opposite, so the net potential energy should be zero.
Where is the potential due to a line charge zero?
We know: The total potential at the point will be the algebraic sum of the individual potentials created by each charge. If you place the -1 C charge 1 cm away from the point then the potential will be zero there.
Is electric potential zero when electric field is zero?
Yes, electric potential can be zero at a point even when the electric field is not zero at that point. … At the midpoint of the charges of the electric dipole, the electric field due to the charges is non zero, but the electric potential is zero.
What is the potential inside a hollow sphere?
As we know that the electric field intensity inside the hollow spherical charged conductor is zero. Hence, the work done in moving a point charge inside the hollow spherical conductor is also zero. This implies that the potential difference between any two points inside or on the surface of the conductor is zero.