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Questions  

Three resistances of, 1Ω each are connected in parallel. Such connection is again connected with 2/3  Ω resistor in series. The resultant resistance will be

a
53 Ω
b
32 Ω
c
1 Ω
d
23 Ω

detailed solution

Correct option is C

Resistance of 1 Ω group = Rn=13 ΩThis is in series with 23 Ω resistor.∴  Total  resistance = 23+13=33 Ω=1Ω

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