Electronics and Communication Engineering - Networks Analysis and Synthesis - Discussion

Discussion Forum : Networks Analysis and Synthesis - Section 3 (Q.No. 49)
49.
In figure, power in 6 Ω resistor is zero then V =
202∠45°
20 ∠30°
20 ∠45°
202∠30°
Answer: Option
Explanation:

Power in 6Ω resistor can be zero only if current in 6Ω resistor is zero. Therefore, voltages of nodes a and b are equal . Since equal resistances of 5Ω are on two sides of node b, .

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