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
An electric wire is connected across a cell of e.m.f. E. The current $I$ is measured by an ammeter of resistance $R$. According to ohm's law
PhysicsCurrent ElectricityJEE Main
Options:
  • A $E=I^2 R$
  • B $E=I R$
  • C $E=R / I$
  • D $E=I / R$
Solution:
2071 Upvotes Verified Answer
The correct answer is: $E=I R$
Correct option is B. \(E=I R\)
From ohm's law potential drop \(=\) current \(\mathrm{x}\) resistance mathmatically \(E=I R\)

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.