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MHT CET202314 May 2023Evening ShiftPhysicsCurrent ElectricityActual

When moving coil galvanometer (MCG) is converted into a voltmeter, the series resistance is ' n ' times the resistance of galvanometer. How many times that of MCG the voltmeter is now capable of measuring voltage?

Options

  1. An
  2. Bn+1 n
  3. Cn+1
  4. Dn-1

Correct answer

C. n+1

Step-by-step solution

Series resistance is n times of galvanometer resistance: R _ s = nR _ G Relation between voltage and current: array ll & V = I ( R _ s + R _ G ) & V = I ( nR _ G + R _ G ) & V = IR _ G ( n +1) array

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