Question

Which equation is used to calculate the electric potential in an electric field from a point charge?

V = kq over d squared
V = kq over d
V =delta U over q
V = delta U over E

Answer 1

The equation used to calculate the electric potential \( V \) in an electric field from a point charge is:

\[ V = \frac{kq}{d} \]

where:
- \( V \) is the electric potential,
- \( k \) is Coulomb's constant (\( 8.99 \times 10^9 \, \text{N m}^2/\text{C}^2 \)),
- \( q \) is the charge,
- \( d \) is the distance from the point charge to the point where the potential is being calculated.

So the correct answer from your options is:

**V = kq over d**.