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Questions  

For what value of R in circuit, current through 4   Ω resistance is zero?

a
4   Ω
b
1   Ω
c
3   Ω
d
5   Ω

detailed solution

Correct option is B

As current through 4   Ω is zero, there should be no potential drop across it.Value of R for this condition =  1   Ω

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