What is the equation for calculating the electrical force, Fe, between two charges?

Question

Fe = kStartfraction q Subscript 1 baseline times q Subscript 2 baseline over d Endfraction.
Fe = Startfraction q Subscript 1 baseline times q Subscript 2 baseline over d Superscript 2 baseline Endfraction.
Fe = kStartfraction q Subscript 1 baseline times q Subscript 2 baseline over d Superscript 2 baseline Endfraction.
Fe = kStartfraction q Subscript 1 baseline times q Subscript 2 baseline over d Endfraction Superscript 2 baseline.

Answer 1

The correct equation for calculating the electrical force \( F_e \) between two charges \( q_1 \) and \( q_2 \) is given by Coulomb's law:

\[ F_e = k \frac{q_1 \times q_2}{d^2} \]

Where:

• \( F_e \) is the electrical force between the charges,
• \( k \) is Coulomb's constant (approximately \( 8.99 \times 10^9 , \text{N m}^2/\text{C}^2 \)),
• \( q_1 \) and \( q_2 \) are the magnitudes of the two charges,
• \( d \) is the distance between the centers of the two charges.

Thus, the correct option is:

\[ F_e = k \frac{q_1 \times q_2}{d^2} \]