Charging by Induction
Properties of electric charge
When a charged object is touched to another object , the other object also gets charged with same polarity due to charge transfer . This is called charge by contact .
Charging by 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 as well with opposite polarity . The other extreme end of the newly charged object develops polarity same as that of the charged object . This type of charging is called charge by induction .
Properties of electric charge
Electric charge for a body is considered as Point charges if their size is very small in comparison to the distance between them . So the charge is considered to be concentrated at one point . Following are the properties of electric charge in terms of point charges :