A galvanometer, having a resistance of 50 W gives a full scale deflection for a current of 0.05 A. The length in meter 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 × \[{{10}^{-7}}\]Wm) [EAMCET 2003]

A galvanometer, having a resistance of 50 W gives a full scale deflect

1.	A galvanometer, having a resistance of 50 W gives a full scale deflection for a current of 0.05 A. The length in meter 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 × \[{{10}^{-7}}\]Wm) [EAMCET 2003]
A.	9
B.	6
C.	\[420\,k\Omega \]
D.	1.5
Answer» D. 1.5

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