Physics · 2021
JEE Main · 3 August 2021, Shift 1 · Q23
The length of a wire is increased by 20 % by stretching. The percentage increase in resistance of wire will be \ \ \ \.
The length of a wire is increased by $\displaystyle 20 \%$ by stretching. The percentage increase in resistance of wire will be \_\_\_\_.
Official answer
44
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