Two identical isolated conducting spheres are picked for an experiment. only one of them is charged. if the spheres are now briefly brought into contact and then separated by a small distance, the two spheres would experience

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples