Question

An object with a charge of -3C is touched to an object with a charge of -1C. What is the new charge on each object?

Answer 1

In general, once the wire is connected, the two spheres have to be held at equal electric potential (voltage). Since they are of equal size, equal voltage means equal charge. (The voltage is kQ/R on the surface of the sphere — if the two spheres are far apart.)

Step-by-step explanation:

each sphere has -1c

Answer 2

It’s the average
-3*(-1)=-4
-4/2=-2C