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What is the total impedance ZT of a series network consisting of a 5 Ω resistor, an inductor having 10 Ω reactance, and a capacitor with 15 Ω reactance?

Question

What is the total impedance ZT of a series network consisting of a 5 Ω resistor, an inductor having 10 Ω reactance, and a capacitor with 15 Ω reactance?

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Solution

The total impedance (ZT) of a series network consisting of a resistor (R), an inductor (L), and a capacitor (C) can be calculated using the formula:

ZT = sqrt[(R^2) + (XL - XC)^2]

where:

  • R is the resistance,
  • XL is the reactance of the inductor, and
  • XC is the reactance of the capacitor.

Given that R = 5 Ω, XL = 10 Ω, and XC = 15 Ω, we can substitute these values into the formula:

ZT = sqrt[(5^2) + (10 - 15)^2] = sqrt[(25) + (-5)^2] = sqrt[(25) + (25)] = sqrt[50]

Therefore, the total impedance ZT of the series network is sqrt[50] or approximately 7.07 Ω.

This problem has been solved

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