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Question: Answered & Verified by Expert
A voltmeter of range $3 \mathrm{~V}$ and resistance $200 \Omega$ cannot be converted to an ammeter of range
PhysicsCurrent ElectricityMHT CETMHT CET 2011
Options:
  • A $10 \mathrm{~mA}$
  • B $100 \mathrm{~mA}$
  • C $1 \mathrm{~A}$
  • D $10 \mathrm{~A}$
Solution:
1327 Upvotes Verified Answer
The correct answer is: $100 \mathrm{~mA}$
$I_{g}=\frac{3 \mathrm{~V}}{200 \Omega}=0.015 \mathrm{~A}$
So, new range cannot be less than $15 \mathrm{~mA}$.

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