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The falling water rotates blades of a turbine, which then spins a generator that converts the mechanical energy of the spinning turbine into electrical energy. Hydroelectric power is a significant component of electricity production worldwide.

## What is the electric potential between two positive charges?

If you bring two positive charges or two negative charges closer, you have to do positive work on the system, which raises their potential energy. Since potential energy is proportional to **1/r**, the potential energy goes up when r goes down between two positive or two negative charges.

## 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**.

## What is electric potential due to a point charge?

Electric potential of a point charge is **V=kQr V = k Q r** . Electric potential is a scalar, and electric field is a vector. Addition of voltages as numbers gives the voltage due to a combination of point charges, whereas addition of individual fields as vectors gives the total electric field.

## What is the potential due to a disc?

for the charged disc, that the electric potential **is smallest near the disc** and the magnitude of the electric field is maximum near the center.

## How do you know if electric potential is positive or negative?

If it travels to a higher potential work has been done on the particle. So is work done is positive when it moves the way it naturally would. If it moves freely it will move to a place of lower potential. Hence change in potential energy **is negative**.

## What are the points at which electric potential of a dipole has maximum value?

When **the angle between the dipole moment and electric field is 180°** then the potential energy of electric dipole is maximum.