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  ×  10−2  cm2  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  ×  10−7  Ω m)