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Current Electricity question

2024 · 6 Apr · Shift 1 · Q88
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Current Electricity question

2024 · 6 Apr · Shift 1 · Q88

JEE MainPhysicsCurrent ElectricityNumerical+4 / −1
A wire of resistance RRR and radius rrr is stretched till its radius became r/2r / 2r/2. If new resistance of the stretched wire is x Rx ~Rx R, then value of xxx is ‾\underline{\hspace{2cm}}​.
Numerical answer
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