Final answer:
If the magnitudes of the charges are doubled and their separation is also doubled, the electrical force between them will change. Specifically, the force will be reduced by a factor of 4.
Step-by-step explanation:
The electrical force between two charges is given by Coulomb's law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. If the magnitudes of the charges are doubled and their separation is also doubled, the force between them will change.
Let the original force be F. When the magnitudes of the charges are doubled, the new force becomes 2F. When the separation is doubled, the new force becomes F/4. Therefore, the electrical force between the two charges is reduced by a factor of 4.