MCQ
A $100 \mathrm{ohm}$ galvanometer gives full scale deflection at $10 \mathrm{~mA}$. How much shunt is required to read $100 \mathrm{~mA}$
- ✓$11.11 \mathrm{ohm}$
- B$9.9 \mathrm{ohm}$
- C$1.1 \mathrm{ohm}$
- D$4.4 \mathrm{ohm}$
✓
Answer
Correct option: A.
$11.11 \mathrm{ohm}$
$ i_g=i \frac{S}{G+S} \Rightarrow 10 \times 10^{-3}=\frac{S}{100+S} \times 100 \times 10^{-3}$
$90 S=1000 \Rightarrow S=\frac{1000}{90}=11.11 \Omega$
$90 S=1000 \Rightarrow S=\frac{1000}{90}=11.11 \Omega$
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