resistor and a 440 mH inductor (796) Problem 8: An RL circuit consists of a 32.5

Question

resistor and a 440 mH inductor (796) Problem 8: An RL circuit consists of a 32.5 Randomized Variables R 32.5 2 L = 440 mH f2 8 kHz ? 50% Part (a) Find its impedance Z at 45 Hz in ?. Grade Sun Deductions Potential cos0 tan() | ? | ( Submissior Attempts re (5% per att detailed vie Sim acosO acotansinh0 cotanO asin0 atan cotanh0 END Degrees Radians NO CLEAR Submit Hint I give up! Hints: 200 deduction per hint. Hints remaining: 2 Feedback: 200 deduction per feedback. 50% Part (b) Find its impedance Z at 8 kHz in ?.

Explanation / Answer

here,

resistance , R = 32.5 ohm

inductance , L = 440 mH = 0.44 H

a)

the impedance , Z = sqrt(R^2 + Xl^2)

Z = sqrt(R^2 + (2 * pi * f * L)^2)

Z = sqrt(32.5^2 + (2 * pi * 45 * 0.44)^2) ohm

Z = 128.6 ohm

b)

the impedance , Z = sqrt(R^2 + Xl^2)

Z = sqrt(R^2 + (2 * pi * f * L)^2)

Z = sqrt(32.5^2 + (2 * pi * 8000 * 0.44)^2) ohm

Z = 22116.8 ohm

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