Q1: What is the impedance of a 1 kHz series RL circuit when R and XL are both 1000 ohms?

A 1414 ohms

B 2000 ohms

C 500 ohms

D 1000 ohms

ANS:C - 1414 ohms

Z = R + jX_L.

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

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