It is called the cell electromotive
force (emf) of the cell when no current is drawn through the cell It
is now an accepted convention that we keep the anode on the left and
the cathode on the right  while representing the galvanic cell A galvanic
cell is generally represented by putting a vertical line between metal
and electrolyte solution and putting a double vertical line between
the two electrolytes connected by a salt bridge Under this 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