Electric Charge
Electric Charge
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field .
o
Electromagnetism is the phenomenon of the interaction of electric currents or fields and magnetic fields . o
o
When insulating surfaces are rubbed against each other , a static charge is developed which gets discharged after getting in contact with a conductor .
Only one of the two charges ( or polarity ) gets developed on rubbing – either positive or negative . An object becomes positively charged when it loses the loosely bound electrons to another object while rubbing . The other object gains electrons and becomes negatively charged .
o When like charges are brought near , they repel each other . Unlike charges attract each other . o
o
The charges get neutralized when the two bodies are brought in contact .
An example of electric charge generation through rubbing of glass rod with silk and plastic rod with silk is mentioned below :