MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
Choose the correct relation for e.m.f. (ε) and terminal voltage V: (a) ε = V [always] (b) V > ε [always] (c) V < ε [when the cell is in use] (d) None of these
Topic: EMF and terminal voltage
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Answer
Exam answer
(c) V < ε when the cell is in use.
Explanation
When current flows, ε = V + Ir, so terminal voltage is less than emf.
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