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Question
A 100 μA ammeter has an internal resistance of 100 Ω. The range is to be extended to 500 μA. The shunt required is of resistance __________
Options:
A .  20.0 Ω
B .  22.22 Ω
C .  25.0 Ω
D .  50.0 Ω
Answer: Option C
Answer: (c).25.0 Ω

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