02.24: Two small hollow metal spheres hung on insulating threads att
xk7t2z*q;c3w x jfnu5ract one another as shown. It is known that a pos
7nuc tkx2;zjfw q x*35itively charged rod will attract ball A.
I. Ball A has a positive charge
II. Ball B has a negative charge
III. Ball A and Ball B have opposite charges
Which of the above can be correctly concluded about the charge on the balls?