TS EAMCET · Physics · Current Electricity
In a galvanometer \(5 \%\) of the total current in the circuit passes through it. If the resistance of the galvanometer is \(G\), the shunt resistance \(S\) connected to the galvanometer is
- A \(19 G\)
- B \(\frac{G}{19}\)
- C \(20 G\)
- D \(\frac{G}{20}\)
Answer & Solution
Correct Answer
(B) \(\frac{G}{19}\)
Step-by-step Solution
Detailed explanation
Shunt of an ammeter, \[ S=\frac{I_g \times G}{I-I_g} \] \(\begin{aligned} & =\frac{5 \times G}{100-5} \\ & =\frac{G}{19}\end{aligned}\)
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