Post-UTME Physics 2009 Objective — Question 9
Question 9 of 10 from the Post-UTME Screening (Post-UTME) Physics 2009 Objective paper, with the correct answer and a full explanation.
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In electrolysis experiments a cathode of mass 5g is found to weigh 5.01g after a current of 5A flows for 50 seconds. What is the electrochemical equivalent of the deposited substance?
- A. 0.00004g/CCorrect
- B. 0.00002g/C
- C. 0.02500g/C
- D. 0.05000g/C
Explanation
Z=mass deposited/(I×t)=0.01/(5×50)=0.00004g/C.
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