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Question

Find the current through the 10 Ω resistor shown in the figure (32-E14).

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Solution


Applying KVL in loop 1, we get:
3i + 6i1 = 4.5 ...(1)
Applying KVL in loop 2, we get:
i-i110+3-6i1=010i-16i1=-3 ...(2)
Multiplying equation (1) by 10 and (2) by 3 and then, subtracting (2) from (1), we get:
-108i1=-54i1=54108=12=0.5
Substituting the value of i1 in (1), we get:
3i+6×12-4.5=03i-1.5=0 i=1.53=0.5
So, current flowing through the 10 Ω resistor = i - i1 = 0.5 - 0.5 = 0 A

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