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an ammetor is reads upto 1ampere its internal resistance is 0.81 ohm .to increase the range to 10 ampere the value of required shunt is

an ammetor is reads upto 1ampere its internal resistance is 0.81 ohm .to increase the range to 10 ampere  the value of required shunt is
 

Grade:12th pass

1 Answers

Khimraj
3007 Points
4 years ago
Resistance of ammeter Rg = 0.81ohm
ammeter current Ig = 1A.
New ammeter range = 10A.
shunt resistance Rs =?
Rs = (Ig/(I-Ig))Rg = (1/9)*0.81 = 0.09 ohm.
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