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A galvanometer having a resistance of 50...

A galvanometer having a resistance of `50Omega` , gives a full scale deflection for a current if `0.05` A. The length in metre if a resistance wire of area of cross- section `2.97 xx10^-2cm^2` that can be used to convert the gaivanometer into an ammeter which can read a maximum of 5 A current is (specific resistance of the wire =`5xx10^-7Omega-m`)

A

9

B

6

C

3

D

1.5

Text Solution

Verified by Experts

The correct Answer is:
C
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