Find the current in the circuit.(a) 0.54A(b) 0.65A(c) 0.67A(d) 0.87AI had been asked this question by my college professor while I was bunking the class.This interesting question is from Delta Star Transformation topic in section Network Theorems of Basic Electrical Engineering

Find the current in the circuit.(a) 0.54A(b) 0.65A(c) 0.67A(d) 0.87AI

1.	Find the current in the circuit.(a) 0.54A(b) 0.65A(c) 0.67A(d) 0.87AI had been asked this question by my college professor while I was bunking the class.This interesting question is from Delta Star Transformation topic in section Network Theorems of Basic Electrical Engineering
Answer» Right answer is (a) 0.54A The explanation: The 3 5 ohm RESISTORS are connected in delta. Changing it to STAR: R1=R2=R3 = 1.67 ohm. One of the 1.67 ohm resistors are connected in series with the 2 ohm resistor and another 1.67 ohm resistor is connected in series to the 3 ohm resistor. The resulting network has a 1.67 ohm resistor connected in series with the parallel CONNECTION of the 3.67 and 4.67 resistors. The equivalent RESISTANCE is 3.725A. I=2/3.725 = 0.54A.

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