Question:medium

A wire of length $100~\mathrm{cm}$ is connected to a cell of emf $2\mathrm{V}$ and negligible internal resistance. The resistance of the wire is $3\Omega$. The additional resistance required to produce a potential difference of $1\mathrm{mV / cm}$ is}

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Potential gradient $k = \frac{V}{L}$, and $I = \frac{E}{R_{total}}$.
Updated On: Apr 8, 2026
  • $60\Omega$
  • $47\Omega$
  • $57\Omega$
  • $35\Omega$
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The Correct Option is C

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