Two objects are attracted to each other by electromagnetic forces. suppose i double the charge of one object. how can i return the force to its original value?

1. Reduce the charge on second object by half or

2. Increase the distance between the two charges by a factor of 1.41 (√2).

Explanation:

Lets assume,

Charge on first object = Q

Charge on second object = q

Distance between them = r

Force between the two charges = F

According to Coulomb's law,

where, k = Coulomb constant

New value of charge on first object = 2Q. Thus the new force(F') will be

So, to bring the value of force(F') to original value, there are two options:

1. Reduce the charge on second object by half or

2. Increase the distance between the two charges by a factor of 1.41 (√2).

we need answer choices

this would be about 43%