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Measurements and Instrumentation - Engineering

Q1:

Two ammeters A and B both 0-10 A have internal resistance of 1 Ω and 0.5 Ω respectively. They are connected in parallel. If total current is 15 A, then

A IA = IB = 7.5 A

B IA = 5 A, IB = 10 A

C IA = 10 A, IB = 5 A

D IA = 9 A, IB = 6 A

ANS:B - IA = 5 A, IB = 10 A

Currents divide in inverse proportion of resistances. .