JEE Mains · Physics · STD 12 - 4. Moving charges and magnetism
In an ammeter, \(5 \%\) of the main current passes through the galvanometer. If resistance of the galvanometer is G, the resistance of ammeter will be _______.
- A \(\frac{G}{20}\)
- B \(\frac{G}{199}\)
- C \(199 \mathrm{G}\)
- D \(200 \mathrm{G}\)
Answer & Solution
Correct Answer
(A) \(\frac{G}{20}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{I}_{\mathrm{S}} \mathrm{S}=\mathrm{I}_{\mathrm{g}} \mathrm{G}\) \(\frac{95}{100} \mathrm{IS}=\frac{5 \mathrm{I}}{100} \mathrm{G}\) \(\mathrm{S}=\frac{\mathrm{G}}{19}\)…
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