Answer:
By friction,by contact,by Electrostatic induction
Step-by-step explanation:
By friction:This is the process whereby electric charges are produced when two surfaces move over another
By Contact :This is when energy is produced when two bodies come in contact with each other
By electrostatic induction: When a charged object is brought closer to another object (not touched), the original object doesn't lose any charge and the other object gets charged.
hope this helps