Question

c)
Complete the table given below
Pair of bodies used for rubbing
and the electron transfer between them
Charge received
Pair of bodies
Negative
Positive
Electron transfer
Rubber rod, wool
Wool
Glass rod, Silk
Silk
Glass rod loses
electrons
Ebonite, Wool​

Answer 1

Explanation:

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.

This is actually one of the most fail-safe electrostatics experiments I have ever seen. The photos included on this page were taken on a hot, humid day (which usually spells death for electrostatic experiments). If your results seem rather weak and unimpressive, rub the rods more vigorously and for more time and it should work.