Current Electricity Charging Discharging Of Capacitors Question 253

Question: We have a galvanometer of resistance $ 25,\Omega $ . It is shunted by a $ 2.5,\Omega $ wire. The part of total current that flows through the galvanometer is given as

[AFMC 1998; MH CET 1999; Pb. PMT 2002]

Options:

A) $ \frac{I}{I _{0}}=\frac{1}{11} $

B) $ \frac{I}{I _{0}}=\frac{1}{10} $

C) $ \frac{I}{I _{0}}=\frac{3}{11} $

D) $ \frac{I}{I _{0}}=\frac{4}{11} $

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Answer:

Correct Answer: A

Solution:

$ \frac{i}{i _{g}}=\frac{G+S}{S} $

Therefore $ \frac{i _{g}}{i}=\frac{S}{G+S}=\frac{2.5}{27.5}=\frac{1}{11} $