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JEE Main20199 Apr 2019Evening ShiftPhysicsCurrent ElectricityActual

The resistance of a galvanometer is 50 o h m and the maximum current which can be passed through it is 0.002 A . What resistance must be connected to it in order to convert it into an ammeter of range 0 - 0.5 A ?

Options

  1. A0.2 o h m
  2. B0.5 o h m
  3. C0.002 o h m
  4. D0.02 o h m

Correct answer

A. 0.2 o h m

Step-by-step solution

R G i g = R s i s 50 × 0.002 = R s 0.498 R s = 0.2 O h m

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