JAMB Physics 2018 Objective — Question 12
Question 12 of 38 from the Joint Admissions and Matriculation Board (JAMB) Physics 2018 Objective paper, with the correct answer and a full explanation.
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A cell whose internal resistance is 0.5Ω delivers a current of 4A to an external resistor. The lost voltage of the cell is
- A. 2vCorrect
- B. 1.25v
- C. 9v
- D. 11v
Explanation
Lost voltage = Ir = 4×0.5 = 2V.
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