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[" 67.A battery having "12" V emf and in...

[" 67.A battery having "12" V emf and internal resistance "],[3Omega" is connected to a resistor.If the current in the "],[" circuit is "1" A,then the resistance of resistor and lost "],[" voltage of the battery when circuit is closed will be "],[" (a) "7Omega,7Vquad " (b) "8Omega,8V],[qquad " (d) "9Omega,10V]

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