Question

Consider the electric force between a pair of charged particles a certain distance apart. By Coulomb's Law: If instead, the charge of both particles is doubled, the force is _____.

a. unchanged
b. halved
c. doubled
d. quadrupled

Answer 1

Answer:

the answer is d

Explanation:

from F=Q1Q2

r².

then wen both charges are doubled

F=2Q1 ×2Q2

r²

F=4Q1Q2

r²

then 4 has to be the factor multiplied by the other part of the equation for it to balance

4F=4Q1Q2

r²

so theoretically the 4 on the LHS can cancel the 4 on the RHS