If you place a charged object next to an uncharged object that is a conductor:
a. There is an attractive force between the two objects.
b. The force depends on whether the charge is positive or negative.
c. There is no force between the two objects.
d. There is a repulsive force between the two objects.

A

Explanation:

I think that if the object is a conductor, it would want all of that electricity, attracting the object

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

increase masses, decrease separation