A galvanometer, having a resistance of 50 Ω, gives a full scale deflection for a current of 0.05 {\A}. The length in metre of a resistance wire of area of cross-section 2.97 \times 10^{-2} {\cm}^2 that can be used to convert the galvanometer into an ammeter which can read a maximum of 5 A current is : (Specific resistance of the wire =5 \times 10^{-7} Ω- {\m})

EAMCET Engineering 2003 Solved Paper

Section: Physics

Question : 23 of 160

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A galvanometer, having a resistance of 50Ω, gives a full scale deflection for a current of 0.05A. The length in metre of a resistance wire of area of cross-section 2.97×10−2cm2 that can be used to convert the galvanometer into an ammeter which can read a maximum of 5A current is :
(Specific resistance of the wire =5×10−7Ω−m)

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