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NEETPhysicsMagnetic Effects of Current

What value of resistance R1 should be used in a multirange voltmeter constructed using a galvanometer circuit, shown in Fig. 4.2, to measure 2V, 20V, and 200V, with a galvanometer resistance of 10 ohms, which produces maximum deflection for a current of 1mA?

Options

  1. A1990 ohms
  2. B2000 ohms
  3. C2010 ohms
  4. D1980 ohms

Correct answer

A. 1990 ohms

Step-by-step solution

Correct Option is : (A) 1990 ohms

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