An EMF (Electromotive Force) device maintains a potential difference across a circuit by performing work on charge carriers, which creates a force within the circuit. This force is generated through chemical reactions in batteries or magnetic forces in generators. The two terminals of an EMF device are indeed charged, and the continuous maintenance of this charge is facilitated by the energy released or absorbed during chemical reactions. Understanding these principles is essential for grasping how EMF devices function in electrical circuits.
PREREQUISITESStudents of physics and chemistry, electrical engineers, and anyone interested in understanding the principles of electromotive force and its applications in circuits.
Yes. There is a force which keeps the terminals charged and maintains a potential difference between them. This force originates from chemical reactions in a battery or magnetic force in a generator.esha said:are these terminals charged so as to maintain an electrical field and if they are charged who is keeping them charged continuously?
I don't know much about chemical reactions and resulting forces. You can post in the general physics or chemistry forums for further details.esha said:how does chemical reactions originate forces? they can release or absorb energy. isn't it?