Question

Consider two equally charged objects separated by a short distance.  According to Coulomb’s Law, how does doubling the charge on one object affect the electric force present between two charged objects

Question 4 options:
A. results in one-half of the original electric force
B. results in one-fourth of the original electric force
C. increases the electric force by a factor of four
D. double force by a factor of four

Answer 1

Coulomb's Law states

F = K Q1 * Q2 / R^2 where K is the force constant

F2 / F1 = 2 Q1 * Q2 / (Q1 * Q2) = 2 where one of the charges is doubled

So the force will be doubled (D looks rather vague but it cannot be the other three)