# When two electrons are 1 cm apart, what expression could represent their electric potential energy?

The electric potential energy between two electrons can be represented by the expression:

U = k * e^2 / r

Where:

k = Coulomb’s constant
e = the charge on an electron
r = the distance between the two electrons

## Other related questions:

### Q: What is the expression for the potential energy of two charges?

A: The potential energy of two charges is given by the expression:

U = kq1q2/r

where k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between the charges.

### Q: How do you calculate the electric potential energy between two charges?

A: The electric potential energy is given by:

U = k * q1 * q2 / r

where k is the Coulomb’s constant, q1 and q2 are the charges, and r is the distance between the charges.

### Q: What is the potential energy of a single electron?

A: The potential energy of a single electron is about -13.6 eV.

### Q: What is the electric potential at the Centre of a square of side 1m?

A: The electric potential at the center of a square of side 1m is zero.