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Current and terminal voltage when two cells with internal resistances are connected in a loop

This type of question, asked 2 times: 11 May 2024 S2, 25 Apr 2025 S2. All 2 questions below, oldest first.

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  1. Question 1

    11 May 2024 S2

    41
    Two batteries, one of e.m.f. 12 V and internal resistance 2 Ω2\,\Omega and other of e.m.f 6 V and internal resistance 1 Ω1\,\Omega, are connected as shown in the figure. What will be the reading of the voltmeter 'V'?

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  2. Question 2

    25 Apr 2025 S2

    32
    Two batteries of e.m.f 4 V and 8 V with internal resistance 1Ω1\Omega and 2Ω2\Omega respectively are connected in a circuit with a resistance of 9Ω9\Omega as shown in the figure. The current and potential difference between the points ' P ' and ' Q ' is R=9ΩR = 9\Omega

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