Three unequal resistors in parallel are equivalent to a resistance $1\,\,{\rm{\Omega }}$. If two of them are in the ratio ${\rm{1:2}}$ and if no resistance value is fractional, the largest of the three resistance in ohm is

JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Three unequal resistors in parallel are equivalent to a resistance

1\,\,\mathrm{\Omega }

. If two of them are in the ratio

\mathrm{1:2}

and if no resistance value is fractional, the largest of the three resistance in ohm is

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Correct option: B

Option B (8) is correct because it is the original resistance calculated using Ohm's law and the given current changes.

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\mathrm{\rho }

3\,\,{\mathrm{m}^3}

3\,\,\mathrm{\Omega }

4.7\,\, \times \,\,{10^6}\,\,\mathrm{\Omega }\,\, \pm \,\,5\,\,\%

22.5\,cm