An a.c. circuit contains 4Ω resistance wire in series with an inductance coil of reactance 3Ω. The impedence of the circuit is:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 5 Ω
Impedance, $Z=\sqrt{R^2+{X_L}^2}$
$=\sqrt{4^2+3^2}$
$=5Ω$