In a series R - C circuit, the resistance of the resistor is 4 Ω and capacitive reactance is 3 Ω. Calculate the impedance of the circuit
A
1Ω
B
4Ω
C
5Ω
D
7Ω
E
12Ω
Verified Correct Answer: C.
Physical Principles & Numerical Solution
Z = \sqrtR2 + x2
Z = \sqrt42 + 32
= 5Ω
Source: Myschool Past Questions Archive (Record #25027)