MolSynapsequestion bank
MolSynapse / Question bank / Electrochemistry / Current efficiency and series/parallel electrolytic cells
NEET levelSingle correct optionDifficulty 1 of 3ec143

Two electrolytic cells, one containing and the other , are connected in series to a battery. Which statement is correct?

  1. AThe same quantity of charge passes through both cells
  2. BThe same mass of metal is deposited in both cells
  3. CThe current divides between the two cells in the ratio of their resistances
  4. DThe same number of moles of metal is deposited in both cells

Answer: A

In a series connection the same current flows through every element for the same time, so the same charge passes through both cells. By Faraday's second law the masses deposited are then proportional to the equivalent masses ( for Ag, for Cu), so neither the masses nor the moles are equal. Current division between cells happens only in a parallel connection.
Practice Electrochemistry More on Current efficiency and series/parallel electrolytic cells
Previous questionNext question

More questions on Current efficiency and series/parallel electrolytic cells