In the first cell, the metal silver (Ag) is plated and in the second cell, the metal nickel (Ni) is plated.
<h3>What are electrodes?</h3>
Electrodes may be defined as electrical conductors operated to construct connections with a nonmetallic part of a circuit. An electrode is referred to as an anode or a cathode depending on the direction of the flow of electrons.
In the first cell,
→ Ag = 0.80V.
→ Al = -1.66V.
In the second cell,
→ Zn = -0.76V.
→ Ni = -0.25V.
Since the cells are connected in series:
> 0.
∴The total potential, =
= (0.80 + 1.66 ) V - (0.25 +0.76 ) V
= 2.97 V
Therefore, it is well described above.
To learn more about Electrochemical potential, refer to the link:
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