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A battery of emf 10V and internal resistance 3Ω is connected to a resistor. If the current in the circuit is 0.5 A,

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A battery of emf 10V and internal resistance 3Ω is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?  

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∴ terminal voltage = 8.5 V

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