Sat July 21, 2012 By: Madhurima Garg

How do a battery creates difference between voltage at the 2 ends .

Expert Reply
Sun July 22, 2012
It uses the principle of electrolytic potential.
Each element has some affinity to lose or gain electron.
This affinity is utilized by two materials acting as two electrodes in a particular solvent such that a transfer of electrons occur through the solution if the circuit is completed by joining the two electroed via a circuit.
Thus it produces a potential at its two ends.
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