The current (i1) (in A) flowing through 1Ω resistor in the following circuit is
A
0.40A
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B
0.20A
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C
0.25A
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D
0.5A
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Solution
The correct option is B0.20A Net resistance across CD=12ΩNet resistance across BE=2+12=52ΩNet resistance across BE=52×252+2=109Ω.Total current in circuit=VR=910AIn the given circuit,voltage across BE = voltage across BF=1VCurrent across BE=VBER=25ACurrent across CD and DE will be same which is 25A.Now, current across any 1Ω resistor will be same and given by =I=12×25=15=0.20A