For a circuit shown below calculate the value of i 1?
![For a circuit shown below calculate the value of i 1?](/img/relate-questions.png)
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For a circuit shown below calculate the value of i1?
A. <span class="math-tex">\(\frac{{43}}{{160}}mA\)</span>
B. <span class="math-tex">\(\frac{{117}}{{32}}\;mA\)</span>
C. <span class="math-tex">\(\frac{{117}}{{22}}mA\)</span>
D. <span class="math-tex">\(\frac{{117}}{{11}}mA\)</span>
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Right Answer is: A
SOLUTION
Diagram
Let i1 and i2 are in mA.
By applying KVL in loop 1,
10 (i2 – i1) – 0.7 - (11 i1) = 0
⇒ 10 i2 – 21 i1 = 0.7 ---(1)
By applying KVL in loop 2,
10 i2 + 10 (i2 – i1) – 10 = 0
2 i2 – i1 = 1 ---(2)
From equations (1) and (2),
\({i_1} = \frac{{43}}{{160}}\;mA\)