JAMB Physics 1989 Question 44

Question 44

Conduction through Liquids and Gases

The electrochemical equivalent of silver is 0.0012 g/C. If 36.0 g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5.0 minutes, the current must be

  1. A.6000 A
  2. B.100 A
  3. C.10 A
  4. D.1 A
Show the answer and explanation

Answer: B (100 A)

Explanation

m = zIt, so I = 36/(0.0012 × 300) = 100 A.