KCET · Physics · Current Electricity
Two similar galvanometers are covered into an ammeter and a milliammeter. The shunt resistance of ammeter as compared to the shunt resistance of milliammeter will be
- A Zero
- B More
- C Less
- D Equal
Answer & Solution
Correct Answer
(C) Less
Step-by-step Solution
Detailed explanation
\(\left(i-i_g\right) s=i_g G\)
\(\begin{aligned}& \text {is }=\mathrm{ig}(\mathrm{~h}+\mathrm{s}) \\& \mathrm{i}=\mathrm{ig}\left(\frac{\mathrm{~g}}{\mathrm{~s}}+1\right)\end{aligned}\)
More 'S', less i
So milliammeter will have more shunt resistance.
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