A resistor is connected to a battery of 12 V emf and internal resistance 2\ . If the current in the circuit is 0.6 A, the terminal voltage of the battery is :

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Correct answer: D. 10.8 V

The terminal voltage V of a battery discharging in a circuit is given by the relation: V = E - Ir Substituting the given values E = 12 V, r = 2\ , and I = 0.6 A: V = 12 - (0.6 2) V = 12 - 1.2 V = 10.8 V Answer: 10.8 V

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