MCQEasyJEE Main 2023 · 15 April, Shift 1Potentiometer

Physics Question from JEE Main 2023 · 15 April, Shift 1

For designing a voltmeter of range 50 V50\,V and an ammeter of range 10 mA10\,mA using a galvanometer which has a coil resistance 54 Ω54\,\Omega and shows full-scale deflection for 1 mA1\,mA as shown in the figure, choose the correct statements.

(A) For voltmeter R≈50 kΩR \approx 50\,k\Omega

(B) For ammeter r≈0.2 Ωr \approx 0.2\,\Omega

(C) For ammeter r≈6 Ωr \approx 6\,\Omega

(D) For voltmeter R≈5 kΩR \approx 5\,k\Omega

(E) For voltmeter R≈500 ΩR \approx 500\,\Omega

Two galvanometer conversion circuits are shown: upper circuit has galvanometer of 54 ohm with series resistance R for 50 V voltmeter, lower circuit has same galvanometer with parallel shunt r for ammeter conversion, and 1 mA full-scale current is marked.
  • A

    (A) and (C)

  • B

    (A) and (B)

  • C

    (C) and (D)

  • D

    (C) and (E)

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