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  4. In the given circuit diagram, the current through the 1Ω resistor is given by I amp. Find the value of 2I . <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-fv4pqdwwouqcdfbz.jpg />

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Q. In the given circuit diagram, the current through the $1\Omega$ resistor is given by $I$ amp. Find the value of $2I$ .
Question

NTA AbhyasNTA Abhyas 2022

Solution:

Solution
$\frac{v - 20}{2}+\frac{v}{2}+v-5=0;$
$v-20+v+2\left(\right.v-5\left.\right)=0=4v-20-10=0$
$v=\frac{30}{4}$
$I=\frac{v - 5}{1}=\frac{15}{2}-5=\frac{15 - 10}{2}=\frac{5}{2}$