In the circuit shown, the resistance R = R = R3 = R4 = Rs = 17.0 2. A voltmeter measures the potential difference across the battery. When the switch is in position 1, the voltmeter measures V = 12.1 V. When the R, switch is in position 2, the voltmeter measures V = 11.7 V. R, What is the emf E of the battery? E = R, V What is the battery's internal resistance r? 1 R, r3= Ω

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