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

shubhendu dash , 6 Years ago
Grade 12th pass
anser 1 Answers
Khimraj

Last Activity: 6 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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