Answer:
Charge imbalance occured due to rubbing.
Comb can get either positive or negative charge and hair get opposite charge
Step-by-step explanation:
Static electricity is created as the result of rubbing. This create charge imbalance .This occur mostly at the surface of object.
When the comb rubs the hair , Comb can get either positive or negative charge and hair get opposite charge.If the comb get negative charge then hairs get positive.