Electronic Devices Test -5

The potential difference between the two electrodes of a galvanic cell is called the cell potential or cell electromotive force and is measured in volts.

Under the standard convention, the emf of the cell is positive and is given by the potential of the half-cell on the right- hand side minus the potential of the half- cell on the left- hand side i.e.

E _cell= E _right -E _left

A potential difference develops between the electrode, and the electrolyte of the solution is called Electrode potential.

The galvanic cell is an electrochemical cell that converts the chemical energy of a spontaneous redox reaction into electrical energy.

In this device, the Gibbs energy of the spontaneous redox reaction is converted into electrical work which may be used for running a motor or other electrical gadgets.

In a galvanic cell, the half-cell in which the oxidation take place is called Anode.