1. The type of charges:
* Like charges repel: If both charges are positive or both are negative, they will push each other away (repulsive force).
* Opposite charges attract: If one charge is positive and the other is negative, they will pull towards each other (attractive force).
2. The direction of the electric field:
* The electric field lines emanate from positive charges and terminate on negative charges.
* The force on a positive charge is in the direction of the electric field.
* The force on a negative charge is in the opposite direction of the electric field.
In simpler terms:
Imagine two magnets. If you have two north poles facing each other, they will push away. If you have a north pole and a south pole facing each other, they will attract. This is similar to how charges interact, but instead of north and south poles, we have positive and negative charges.
Mathematical Representation:
Coulomb's Law quantifies the force between two point charges:
* F = k * (q1 * q2) / r²
Where:
* F is the force
* k is Coulomb's constant
* q1 and q2 are the magnitudes of the charges
* r is the distance between the charges
The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. The direction of the force is determined by the signs of the charges, as explained above.
