Questions
A galvanometer whose resistance is gives fuIl scale deflection with a curren of 0.05 A so that it can read a maximum current of 10 A. A shunt resistance is added in parallel with it. The resistance of the ammeter so formed is
detailed solution
Correct option is C
Resistance of shunted ammeter =GSG+SAlso iig =1 + GS ⇒GSG+S = ig.Gi⇒GSG+S = 0.05 × 12010 = 0.6 ΩTalk to our academic expert!
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The ammeter has range 1 ampere without shunt. The range can be varied by using different shunt resistances. The graph between shunt resistance and range will have the nature
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