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JEE Advanced

Exam: JEE Advanced
Subject: Physics
Chapter: Mathematics in Physics

JEE Advanced · Physics · Mathematics in Physics

A current of ( 2.5 ± 0.05 ) A flows through a wire and develops a...

A current of (

2.5 \pm 0.05

) A flows through a wire and develops a potential difference of

(10 \pm 0.1)

volt. Resistance of the wire i

Options

A $4 \pm 0.12$
B $4 \pm 0.04$
C $4 \pm 0.08$
D $4 \pm 0.02$

Correct answer

A. $4 \pm 0.12$

Step-by-step solution

\begin{aligned} & \mathrm{R}=\frac{10}{2.5}=4 \pm \Delta \mathrm{R} \\ & \Delta \mathrm{R}=0.03 \times 4=0.12\end{aligned}

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