Current Electricity Charging Discharging Of Capacitors Question 195

Question: The resistance of 1 A ammeter is $ 0.018,\Omega $ . To convert it into 10 A ammeter, the shunt resistance required will be

[MP PET 1982]

Options:

A) $ 0.18,\Omega $

B) $ 0.0018,\Omega $

C) $ 0.002,\Omega $

D) $ 0.12,\Omega $

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Answer:

Correct Answer: C

Solution:

$ S=\frac{i _{g}G}{(i-i _{g})} $

$ =\frac{1\times 0.018}{10-1}=\frac{0.018}{9}=0.002\Omega $