PYQ Vault
EbooksTutor

Galvanometer resistance from two series resistances that give two voltmeter ranges

This type of question, asked 8 times: 16 May 2023 S1, 16 May 2023 S2, 25 Apr 2025 S2, 26 Apr 2025 S1, 15 Apr 2026 S1, 17 Apr 2026 S1, 18 Apr 2026 S1, 14 May 2026 S1. All 8 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    16 May 2023 S1

    17
    When a resistance of 100 Ω100\,\Omega is connected in series with a galvanometer of resistance G, its range is V. To double its range a resistance of 1000 Ω1000\,\Omega is connected in series. The value of G is

    Tap an option to check your answer.

  2. Question 2

    16 May 2023 S2

    50
    When a resistance of 200 Ω200\,\Omega is connected in series with a galvanometer of resistance GG, its range is VV. To triple its range, a resistance of 2000 Ω2000\,\Omega is connected in series. The value of GG is

    Tap an option to check your answer.

  3. Question 3

    25 Apr 2025 S2

    42
    With a resistance ' X ' connected in series with a galvanometer of resistance 100Ω100\Omega, it acts as a voltmeter of range 0−15 V0 - 15\text{ }V. To double the range, a resistance of 1500Ω1500\Omega is to be connected in series with ' X '. The value of ' X ' in ohm is

    Tap an option to check your answer.

  4. Question 4

    26 Apr 2025 S1

    2
    When a resistance of 100Ω100\Omega is connected in series with a galvanometer of resistance ' GG ', its range is 'V'. To double its range, a resistance of 1000Ω1000\Omega is connected in series. The value of ' G ' is

    Tap an option to check your answer.

  5. Question 5

    15 Apr 2026 S1

    129
    When a resistance of 200 Ω200\,\Omega is connected in series with a galvanometer of resistance G, its range is V. To triple its range, a resistance of 2000 Ω2000\,\Omega is connected in series. The value of G is

    Tap an option to check your answer.

  6. Question 6

    17 Apr 2026 S1

    130
    With a resistance 'XX' connected in series with a galvanometer of resistance 100 Ω100\,\Omega, it acts as a voltmeter of range 0 - 15 V. To double the range, a resistance of 1500 Ω1500\,\Omega is to be connected in series with 'XX'. The value of 'XX' in Ω\Omega is

    Tap an option to check your answer.

  7. Question 7

    18 Apr 2026 S1

    131
    By connecting a resistance of 980 Ω980\,\Omega in series with a galvanometer, it is converted into a voltmeter of a certain range. When the resistance of 470 Ω470\,\Omega is connected in series, the range is halved. The resistance of the galvanometer is

    Tap an option to check your answer.

  8. Question 8

    14 May 2026 S1

    129
    When a resistance of 100 Ω100\,\Omega is connected in series with galvanometer of resistance RR, its range is VV. To double its range, another additional resistance of 1000 Ω1000\,\Omega is connected in series. Find the value of RR.

    Tap an option to check your answer.