Question

⬜Explain Electromotive Force {E.M.F}⬛​

Answer 1

EMF (electromotive force) is the electrical action produced by a non electrical source. It is also defined as A measurement of energy that causes current to flow through the circuit.... hope this helps you..

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Answer 2

• WHEN NO CURRENT IS DRAWN FROM A CELL, THE POTENTIAL DIFFERENCE BETWEEN THE TWO TERMINALS OF THE CELL IS CALLED ITS EMF (ELECTROMOTIVE FORCE).
• WHEN THE CELL IS CONNECTED TO A CIRCUIT, THE EMF (BETWEEN THE TWO TERMINALS OF THE CELL) PROVIDES ENERGY FOR THE CHARGE TO FLOW THROUGH THE CIRCUIT.
• EMF OF A CELL MAY BE DEFINED AS THE ENERGY SPENT OR WORK DONE PER UNIT CHARGE IN TAKING AN UNIT POSITIVE CHARGE AROUND THE COMPLETE CIRCUIT
• THE UNIT OF EMF IS JOULE PER COULOMB, WHICH IS VOLT.
• THE EMF OF A CELL IS THE CHARACTERISTIC PROPERTY OF THE CELL. IT HAS DIFFERENT VALUES FOR DIFFERENT TYPES OF CELL.
• THE EMF OF AN ELECTRIC CELL DEPENDS ON THE MATERIAL OF THE ELECTRODE AND THE ELECTROLYTE USED IN THE CELL.