When charged spheres are connected using a conducting wire, the charge will redistribute so as to make the potential constant because the connection makes them a single conductor and conductors are equipotential surfaces. My doubt was that if the spheres are of different size and have different charges upon them, say q1 and q2 (q2>q1). So after connectiong won't the charges on the two spheres become same? Or will this happen only when the spheres are of same size? Wouldn't this happen for both cases, i.e when both are of same size or different sizes? Just like if an object is hotter than some other object, heat flows out of the hotter object to the less hotter object till both the objects are at the same temperature. So isn't the same analogy applicable here? Excess of charge over one body, so charge flows from the excess body to the other till both have the same charge? Reply soon please!