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JAMB Physics 2001 Question 29

Question 29

Current Electricity

In a Daniell cell, the depolarizer, positive and negative electrodes are respectively

  1. A.copper sulphate, copper and zinc
  2. B.manganese dioxide, carbon and zinc
  3. C.sulphuric acid, lead oxide and lead
  4. D.potassium hydroxide, nickel and iron.
Show the answer and explanation

Answer: A (copper sulphate, copper and zinc)

Explanation

A Daniell cell has a copper positive pole in copper sulphate solution (the depolariser) and a zinc negative pole.