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A 12 V cell with 1 ohm internal resistance drives a 5 ohm resistor. What is the terminal voltage?
A12 V
B10 V
C6 V
D2 V
Answer & Solution
Correct answer: B. 10 V
I = 12/(5+1) = 2 A, so terminal voltage V = e - I r = 12 - 2 x 1 = 10 V.
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