JAMB Physics 2010 Objective — Question 44
Question 44 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2010 Objective paper, with the correct answer and a full explanation.
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44. In Faraday's law of electrolysis, a graph of mass deposited against the quantity of electricity is plotted. The slope of the graph gives A. the electrochemical equivalent B. the charge released C. the current flowing D. the energy released
- A. the electrochemical equivalentCorrect
- B. the charge released
- C. the current flowing
- D. the energy released
Explanation
By Faraday's first law of electrolysis, m proportional Q (m=ZQ). The slope Z (which is equal to m/Q) is known as the electrochemical equivalent of the element involved. The S.I unit of Z is Kgc-1.
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