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JEE Main 202528 JanuaryEvening Shift
Exam
JEE Main
Year
2025
Date
28 January
Shift
Evening Shift
Subject
Physics
Chapter
Current Electricity

JEE Main 2025 · 28 January · Evening Shift · Physics · Current Electricity

The value of current I in the electrical circuit as given below,...

The value of current I in the electrical circuit as given below, when potential at A is equal to the potential at B, will be ____ A. The value of current I in the electrical circuit as given below, when potential at A is equal to the potential at B,

Correct answer

0

Step-by-step solution

VA=VB⇒ the bridge is balanced ⇒10R=2040R=20ΩI=4020=2A\begin{aligned} & \mathrm{V}_{\mathrm{A}}=\mathrm{V}_{\mathrm{B}} \Rightarrow \text{ the bridge is balanced } \\ & \Rightarrow \frac{10}{\mathrm{R}}=\frac{20}{40} \\ & \mathrm{R}=20 \Omega \\ & \mathrm{I}=\frac{40}{20}=2 \mathrm{ A}\end{aligned}
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