1.Units, Dimensions and Measurement
hard

प्रतिरोध $\mathrm{R}=\frac{\mathrm{V}}{\mathrm{I}}$, जहाँ $\mathrm{V}=(200 \pm 5) \mathrm{V}$ एवं $\mathrm{I}=(20 \pm 0.2) \mathrm{A}$ है। $\mathrm{R}$ के मापन में प्रतिशत त्रुटि है:

A

$3.5 \%$

B

$7 \%$

C

 $3 \%$

D

 $5.5 \%$

(JEE MAIN-2024)

Solution

$\mathrm{R}=\frac{\mathrm{V}}{1}$

According to error analysis

$ \frac{\mathrm{dR}}{\mathrm{R}}=\frac{\mathrm{dV}}{\mathrm{V}}+\frac{\mathrm{dI}}{\mathrm{I}} $

$ \frac{\mathrm{dR}}{\mathrm{R}}=\frac{5}{200}+\frac{0.2}{20} $

$ \frac{\mathrm{dR}}{\mathrm{R}}=\frac{7}{200} $

$ \% \text { error } \frac{\mathrm{dR}}{\mathrm{R}} \times 100=\frac{7}{200} \times 100=3.5 \%$

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.