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Current Electricity question

2018 · 16 Apr · Shift 1 · Q48
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Current Electricity question

2018 · 16 Apr · Shift 1 · Q48

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
A galvanometer with its coil resistance 25 Ω\OmegaΩ requires a current of 1 mA for its full deflection. In order to construct an ammeter to read upto a current of 2 A, the approximate value of the shunt resistance should be :
  1. A
    2.5×10−3 Ω2.5 \times {10^{ - 3}}\,\Omega2.5×10−3Ω
  2. B
    1.25×10−2Ω1.25 \times {10^{ - 2}}\Omega1.25×10−2Ω
  3. C
    1.25×10−3Ω1.25 \times {10^{ - 3}}\Omega1.25×10−3Ω
  4. D
    2.5×10−2Ω2.5 \times {10^{ - 2}}\Omega2.5×10−2Ω
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