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Physics · PYQ NEET UG 2018

हिन्दी

Current sensitivity of a moving coil galvanometer is \( 5\text{ div/mA} \) and its voltage sensitivity (angular deflection per unit voltage applied) is \( 20\text{ div/V} \). The resistance of the galvanometer is

  1. A
    \( 40\text{ }\Omega \)
  2. B
    \( 25\text{ }\Omega \)
  3. C
    \( 250\text{ }\Omega \)
  4. D
    \( 500\text{ }\Omega \)
View Answer & Solution

Correct answer · Option C

\( 250\text{ }\Omega \)

Explanation

Resistance \( R = \frac{I_s}{V_s} = \frac{5\text{ div/mA}}{20\text{ div/V}} = \frac{5 / 10^{-3}}{20} = \frac{5000}{20} = 250\text{ }\Omega \).
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