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An ammeter reads up to 1 ampere. Its int...

An ammeter reads up to 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of the required shunt is

A

`0.09 Omega`

B

`0.03 Omega`

C

`0.3 Omega`

D

`0.9 Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `(i)/(i_(g)) = 1 + (G)/(S) implies (10)/(1) = 1 + (0.81)/(S) implies S = 0.09 Omega`
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