Can insulators be charged by contact/ induction?
An object is considered as neutral if it contains the same number of positive and negative charges. Polarization makes a neutral object to behave as a charged object. Since opposite charges attract a positively charged object can induce a charge alignment in a neutral object so that the object’s electrons are as near to the positively charged object as possible. As a result, the neutral object will appear to react to an electric force as though it were charged. When you charge by induction, you are exploiting polarization. When you charge the electroscope by touching the negatively charged rod to the top of the brass support, you are charging via conduction, which requires contact. The electroscope acquires the same charge as the charged rod; the negatively charged rod (which has taken electrons from the silk) distributes electrons on the electroscope. Charging via conduction necessitates that the charged object physically touches the object to be charged, and both objects will have th