Inductors - Technical MCQs

Q1:

What is the impedance of a 1 kHz series RL circuit when R and XL are both 1000 ohms?

A 500 ohms

B 1000 ohms

C 1414 ohms

D 2000 ohms

ANS:C - 1414 ohms

Z = R + jX_L.

|Z| = |1000 + j1000| = 1414.21 ohms.