The radius (r), length (l) and resistance (R) of a metal wire was measured in the laboratory as r=(0.35 ± 0.05) ~cm R=(100 ± 10) ~ohm l=(15 ± 0.2)~ cm The percentage error in resistivity of the material of the wire is:

Units and Measurements: JEE Main 2024 Physics question

JEE Main 2024 · 1 Feb, Morning shift · Q8317

JEE Main 20241 Feb, Morning shiftPhysicsHardUnits and Measurements122× since 2002

The radius

(\mathrm{r})

, length

(l)

and resistance

(\mathrm{R})

of a metal wire was measured in the laboratory as

\begin{aligned} & \mathrm{r}=(0.35 \pm 0.05) ~\mathrm{cm} \\\\ & \mathrm{R}=(100 \pm 10) ~\mathrm{ohm} \\\\ & l=(15 \pm 0.2)~ \mathrm{cm} \end{aligned}

The percentage error in resistivity of the material of the wire is :

JEE Main 2024 Units and Measurements Question with Solution (1 Feb Morning shift, Q8317) | JEE Arc