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A series circuit has R = 3 ohm, XL = 8 ohm and XC = 4 ohm. Find its impedance.
A15 ohm
B5 ohm
C7 ohm
D9 ohm
Answer & Solution
Correct answer: B. 5 ohm
Z = sqrt(R squared + (XL - XC) squared) = sqrt(9 + 16) = 5 ohm.
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