what is electromotive force explain it with diagram.
Dear student,
The electromotive force or emf, is the energy per unit electric charge that is imparted by an energy source such as electric generator or battery.Energy gets transferred from form of energy to other form of energy.One terminal is positively charge and other is negatively charged.The work done on unit electric charge or energy gained per unit electric charge is called as electromotive force.
In above diagram,circuit diagram the flow of current is shown.A study current I flows through resistor R from A and B.The positive charge flows from higher potential a to lower potential B.The potential drop from A to B is V.The source P of emf does work on these charges as they come through B as the have to take positive charge from lower to higher potential .The charge is transferred from one end of the source of emf to the other and 'qV' work is done on the charge. The source of emf by doing work on the electric charges, maintains a potential difference V between its terminals.
Regards.
The electromotive force or emf, is the energy per unit electric charge that is imparted by an energy source such as electric generator or battery.Energy gets transferred from form of energy to other form of energy.One terminal is positively charge and other is negatively charged.The work done on unit electric charge or energy gained per unit electric charge is called as electromotive force.
In above diagram,circuit diagram the flow of current is shown.A study current I flows through resistor R from A and B.The positive charge flows from higher potential a to lower potential B.The potential drop from A to B is V.The source P of emf does work on these charges as they come through B as the have to take positive charge from lower to higher potential .The charge is transferred from one end of the source of emf to the other and 'qV' work is done on the charge. The source of emf by doing work on the electric charges, maintains a potential difference V between its terminals.
Regards.