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Question

In the following circuit E1=4V,R1=2Ω
E2=6V,R2=2Ω and R3=4Ω. The current i1 is

A
1.6 A
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B
1.8 A
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C
2.25 A
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D
1 A
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Solution

The correct option is B 1.8 A

For loop (1)
- 2i12(i1i2)+4=02i1i2=2 ......(i)
For loop (2) - 4i2+2(i1i2)+6=03i2i1=3 .......(ii)
After solving equation (i) and (ii) we get i1=1.8 A and i2=1.6 A

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