A 10V battery with internal resistance 1 Ω and a 15V battery with internal resistance 0.6 Ω are connected in parallel to a voltmeter. The reading in the voltmeter will be close to.
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A battery of emf 10V and internal resistance 0.5 ohm is to be charged by a battery charger which supplies 110V dc. The resistance that must be connected in series with the
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