Current measured by the ammeter (A) in the reported circuit when no current flows through 10 Ω resistance, will be ________________ A. Numerical answer type. Work it out, then open the answer.

Answer: 10. No current in 10 Ω: R/4 = 3/6 ⇒ R = 2 Ω Top path 2 + 4 = 6 Ω, bottom path 3 + 6 = 9 Ω Req = (6 × 9)/(15) = 3.6 Ω I = 36/3.6 = 10 A

Current measured by the ammeter (A) in the reported circuit when no… | JEE Main 2022 (28 Jun, Shift 1)

Q49JEE Main 2022 · 28 JUN · SHIFT 1Medium

Wheatstone Bridge & Metre Bridge

Current measured by the ammeter (A) in the reported circuit when no current flows through 10 $\Omega$ resistance, will be ________________ A.

Numerical answer type. Work it out, then open the answer.

Show answer and solution

Answer: 10

No current in $10\ \Omega$ : $\dfrac{R}{4} = \dfrac{3}{6} \Rightarrow R = 2\ \Omega$
Top path $2 + 4 = 6\ \Omega$ , bottom path $3 + 6 = 9\ \Omega$
$R_{eq} = \dfrac{6 \times 9}{15} = 3.6\ \Omega$
$I = \dfrac{36}{3.6} = 10$ A

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