MCQ
A $50\, ohm$ galvanometer gets full scale deflection when a current of $0.01\, A$ passes through the coil. When it is converted to a $10\, A$ ammeter, the shunt resistance is ........... $\Omega $
- A$0.01$
- ✓$0.05$
- C$2000$
- D$5000$
✓
Answer
Correct option: B.
$0.05$
b
(b) ${i_g} = i\frac{S}{{G + S}}$
(b) ${i_g} = i\frac{S}{{G + S}}$
$ \Rightarrow $$\frac{{0.01}}{{10}} = \frac{5}{{50 + S}}$
$ \Rightarrow $ $S = \frac{{50}}{{999}} = 0.05\,\Omega $.
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