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Magnetics question

2016 · 9 Apr · Shift 1 · Q72
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Magnetics question

2016 · 9 Apr · Shift 1 · Q72

JEE MainPhysicsMagneticsMCQ+4 / −1
To know the resistance G of a galvanometer by half deflection method, a battery of emf VE and resistance R is used to deflect the galvanometer by angle θ\thetaθ. If a shunt of resistance S is needed to get half deflection then G, R and S are related by the equation :
  1. A
    2S (R + G) = RG
  2. B
    S (R + G) = RG
  3. C
    2S = G
  4. D
    2G = S
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