A moving coil galvanometer of resistance $100 \,\Omega$ is used as an ammeter using a resistance $0.1 \,\Omega$. The maximum deflection current in the galvanometer is $100\,\mu A$. Find the minimum current in the circuit so that the ammeter shows maximum deflection ............... $mA$
IIT 2005, Medium
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(a) ${I_G} \times G = \left( {I - {I_G}} \right)\,S$
$ \Rightarrow $ $I =$ $\left( {1 + \frac{G}{S}} \right){I_G}$
$ \Rightarrow $ $ I = 100.1\, mA$
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