A battery with emf 12 V and internal resistance 1 Ω drives 2 A current. Find terminal voltage V:
A12 V
B10 V
C14 V
D11 V
Answer & Solution
Correct answer: B. 10 V
V = E - Ir = 12 - 2 × 1 = 10 V. The terminal voltage is less than emf due to internal resistance loss.
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