A $100\, ohm$ galvanometer gives full scale deflection at $10\, mA$. How much shunt is required to read $100\, mA$ .............. $ohm$
Medium
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(a) ${i_g} = i\frac{S}{{G + S}}$
$ \Rightarrow $ $10 \times {10^{ - 3}} = \frac{S}{{100 + S}} \times 100 \times {10^{ - 3}}$
$90\;S = 1000 \Rightarrow $$S = \frac{{1000}}{{90}} = 11.11\;\Omega $.
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