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[" 43.A battery of emf "8" and "],[" int...

[" 43.A battery of emf "8" and "],[" internal resistance "r" is "],[" connected to circuit as "r(I)/(T)6Omega(1)/({),12Omega}],[" shown in the figure."],[" When the key "K_(1)" is "],[" closed and "K_(2)" is open,the ideal voltmeter "],[" shows a reading of "18" V.When key "K_(2)" is "],[" closed and "K_(1)" is open,the voltmeter reading "],[" is "24" V.When "K_(1)" and "K_(2)" are both open,the "],[" voltmeter reading is "],[[" a) "8V," b) "12V],[" c) "24V," d) "36V]]

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