First slide

AC Circuits

Question

If an $8 Ω$ resistance and $6 Ω$ reactance are present in an ac series circuit then the impedance of the circuit will be

Moderate

A

20 ohm
B

5 ohm
C

10 ohm
D

$14 \sqrt{2} ohm$

Solution

Impedance $Z = \sqrt{R^{2} + X^{2}} = \sqrt{{(8)}^{2} + {(6)}^{2}} = 10 Ω$

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