An ebonite rod is rubbed with fur. State the kind of-charge acquired by each.

EXPERIMENT: TO DEMONSTRATE CHARGES ARE OF TWO KINDS: 

EXPERIMENT: Take two glass rods A and B and charge each by rubbing them with silk. Take two Ebonite rods C and D and charge each by rubbing with Fur or (flannel) suspend charged rod A by a thread in the stand. Bring charged rod B near A. 

A gets deflected (moves away) This show that A is repelled by B. Now suspend charged rod C in a stand and bring charged rod D ‘ near C. Again repulsion is seen. 

Now bring charged rod C near the suspended charged rod A. This time attraction is there between the two rods. 

This proves that charges are of two kinds A and B have same kind of r charge called +ve charge and similar charge repels each other whereas rods C and D also have similar charge (-ve charge) and repel each other. 

Rod A attracts rod C prove that opposite charges attract each other.