The magnitude of the electrical charge on objects directly affects the electric force between them according to Coulomb's Law. According to this law, the electric force (\(F\)) between two charges is directly proportional to the product of the magnitudes of the charges (\(q_1\) and \(q_2\)) and inversely proportional to the square of the distance (\(r\)) between them. Mathematically, it can be expressed as:
\[ F = k \frac{|q_1 \cdot q_2|}{r^2} \]
Where \(k\) is Coulomb's constant.
Based on this understanding, the correct statement is:
4. As the charge increases, the force increases in strength.
This means that as either or both of the magnitudes of the charges increase, the electric force between them becomes stronger (increases in magnitude).