WAEC Physics 2021 Objective — Question 3
Question 3 of 50 from the West African Examinations Council (WAEC) Physics 2021 Objective paper, with the correct answer and a full explanation.
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3. Formation of hydrogen bubbles at the copper plate of a primary cell is called
- A. polarizationCorrect
- B. back e.m.f
- C. electrolysis
- D. local action
Explanation
This defect, where hydrogen gas collects on the copper plate and increases internal resistance, is called polarization.
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