Question

why does rubber does not get charge when rubbed with wool.

Answer 1

An electroscope can be charged using glass or rubber rods rubbed with silk or wool. ... When the glass rod is rubbed with silk, the silk strips electrons from the rod, leaving it a positive charge. When the hard rubber rod is rubbed with wool, it gains electrons from the wool, gaining a negative charge.

Answer 2

because it is negative charged terminal and wool is a positively charged terminal