Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are $3 \%$ each, then the error in the value of resistance of the wire is
PhysicsMathematics in PhysicsJEE Main
Options:
  • A $3 \%$
  • B $6 \%$
  • C zero
  • D $1 \%$
Solution:
2557 Upvotes Verified Answer
The correct answer is: $6 \%$
$R=V / I$
$(\Delta R / R) \times 100=(\Delta V / V) \times 100+(\Delta I / I) \times 100=3+3=6 \%$
Answer: (2) $6 \%$

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.